Adding thermal energy to a gas at constant pressure will cause...

A. the volume of the gas to decrease.
B. the volume of the gas to increase.
C. the temperature of the gas to decrease.
D. the pressure of the gas to decrease.

Answers

Answer 1

B. the volume of the gas to increase.

What is thermal energy to a gas at constant pressure?

Thermal energy is the energy associated with the random motion of the particles in a substance, such as a gas. When thermal energy is added to a gas at constant pressure, the increased kinetic energy of the gas particles causes them to move apart, increasing the volume of the gas. This relationship is described by Gay-Lussac's Law, which states that at a constant pressure, the volume of a gas is directly proportional to its temperature.

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Related Questions

Consider the ions Ag^+ and S^2-.
How many protons and electrons does each of these ions possess?
protons in Ag^+
electrons in Ag^+
protons in S^2-
electrons in s^2-

Answers

[tex]Ag^+[/tex] would contain 46 electrons and 47 protons.

[tex]S^{2-[/tex] would contain 18 electrons and 16 protons.

Number of electrons and protons in ions

The neutral ions of atoms have an equal number of electrons and protons. Since electrons are negatively charged and protons are positively charged, the number of negative and positive charges balances each other.

The atomic number of atoms is the number of protons in the atoms. Thus, Ag has a proton and electron number of 47 while S has 16 for each.

In order to form [tex]Ag^+[/tex], Ag will lose an electron. Thus the proton number remains at 47 while the electron number has been reduced to 46.

In order to form [tex]S^{2-[/tex], S will gain 2 electrons. Thus, the proton number remains at 16 while the electron number increases to 18.

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The key to predicting precipitation reactions is understanding that only :

Answers

The key to predicting precipitation reactions is understanding the solubility rules of the reactants.

Solubility rules determine which ions are soluble in water and which ions form an insoluble precipitate when combined in aqueous solution. These rules can be used to predict whether a reaction will result in a precipitate or not.

Predicting Precipitation Reactions: A Guide to Understanding Solubility Rules

Precipitation reactions are a common type of chemical reaction which involve two reactants combining together in an aqueous solution to form an insoluble precipitate. In order to predict whether a reaction will form a precipitate or not, one must understand the solubility rules of the reactants. This essay will discuss what solubility rules are, how they are used to predict precipitation reactions, and how to apply them in practice.

Solubility rules are a set of guidelines which determine which ions are soluble in water and which ions form an insoluble precipitate when combined in aqueous solution. Generally, two categories of ions are considered: those that are soluble in water, and those that are insoluble.

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6) Which of the following soutes would cause the greatest increase in the boiling point of
water? Explain your answer thoroughly
SIO vs Kl vs CaCl₂

Answers

When a solute is dissolved in a solvent, the resulting solution will have a higher boiling point than the pure solvent. The extent to which the boiling point is increased is dependent on the concentration of the solute and the type of solute.

In general, non-volatile solutes that have high molecular weights and strong intermolecular forces will cause a greater increase in the boiling point of a solvent than solutes that are volatile or have low molecular weights and weak intermolecular forces.

With this in mind, of the three solutes you listed, calcium chloride (CaCl₂) would cause the greatest increase in the boiling point of water. Calcium chloride is a non-volatile solute with a high molecular weight and strong ionic bonds, which contribute to its ability to increase the boiling point of water.

In contrast, sodium iodide (NaI) is a volatile solute with low molecular weight and relatively weak intermolecular forces, so it would cause a relatively small increase in the boiling point of water.

Potassium chloride (KCl) is also a non-volatile solute with a high molecular weight and strong ionic bonds. However, it would still cause a slightly smaller increase in the boiling point of water than calcium chloride because calcium chloride has a higher molecular weight and stronger intermolecular forces.

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The structures of four complex ions (W, X, Y, and Z) are shown below: Determine which, if any, of these complex ions are (i) geometric isomers, (ii) optical isomers, (iii) identical, or (iv) not related to any of the others as an isomer.

Answers

X and Z are the same compounds while W and Y are geometric isomers.

What are isomers?

We have to note that the term isomers has to do with the compounds that have the same molecular formula but not the same structural formula. The implication of these is that the number of atoms of each of the elements that are in the isomers is the same but the atom to atom connectivity of the atoms in the compounds would differ.

Having this in mind, we should give a good look to the structures that we have in the question that we have. We need to look closely to see if there is any kind of relationship between the molecules that have been shown.

We can already see that there are some of the complex ions that we can be able to regard as the geometric isomers of each other based on the appearance of the structures.

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How does the temperature change as you go from the surface toward the center of Earth How does the temperature change as you go from the surface toward the center of Earth

Answers

TEMPERATURE

As you go deeper into the Earth, the temperature increases due to the heat that is generated within the Earth's interior.

The Earth's interior is hot due to the heat of formation of the planet and the decay of radioactive elements. The temperature also increases with depth due to the high pressure that is exerted on the Earth's crust and mantle by the weight of the overlying material.

The rate at which the temperature increases with depth varies depending on the location and geology of the area. In general, the temperature increases by about 25 to 30 degrees Celsius per kilometer of depth in the crust. In the mantle, the temperature increases more slowly, at a rate of about 1 to 3 degrees Celsius per kilometer of depth. The temperature at the core-mantle boundary, which is located about 2,900 kilometers below the surface, is estimated to be about 3,700 degrees Celsius. The temperature at the center of the Earth, where the pressure is highest, is thought to be about 5,500 degrees Celsius.

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Which statement is true about plasma?
a. It has a fixed volume.
b. It has a fixed shape.
c. It contains ions.
d. It does not occur in nature.
Question 2:
The volume of a gas is
a. fixed.
b. viscous.
c. the same as its container.
d. equal to its mass.

Answers

The statement that is true about plasma is that it contains ions (option C). The statement that is true about the volume of a gas is that it is the same as it's container (option C).

What is matter?

Matter refers to any substance that has mass and occupies space (volume). The states of matter are as follows;

GasLiquidSolidPlasma

Plasma is the state of matter consisting of partially ionized gas and electrons. A gas is an intermediate state between liquid and plasma that can be contained only if it is fully surrounded by a solid.

The volume of a gas is the same as the container that holds it.

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Which of the carbons in Compound 3 corresponds to the carbon marked with an asterisk in Compound 4a?
A.C1
B.C2
C.C3
D.C4

Answers

The carbon in Compound 3 matches the carbon in Compound 4a with an asterisk is C2. Therefore, option B is correct.

Alpha-cadinol is a cadinane sesquiterpenoid that has a hydroxy group at position 10. It acts as a fungicide and a plant metabolite.

This compound is synthesized in two main steps. In the first step, compound 1 undergoes nucleophilic addition to compound 2. Then, the product compound 3 formed will undergo intramolecular aldol condensation. This cyclic product further undergoes dehydration and forms two isomers compound 4a and compound 4b. The compound 4a only is converted to alpha-cadinol.

In the conversion of compound 3 to compound 4a, carbon 2 containing acidic hydrogen will deprotonate and attack the carbonyl of the 5-carbon ring. Therefore, the asterisk is carbon 2.

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Draw the organic product of the following reaction between (1S,3S)-1-chloro-3-methylcyclopentane and methanethiol in the presence of sodium hydroxide. Show any H's on chirality centers, if applicable, and use wedge-and-dash bonds.
Also, Select all that apply: The product of the reaction is characterized as being:
S,S
R,R
R,S
Chiral
Racemic
Achiral

Answers

The product formed is shown in the image attached. It is RR and chiral. This owes to the fact that there is inversion of configuration.

What is an SN2 reaction?

We know that a nucleophilic reaction is one that involves the attack of a nucleophile which is an electron rich specie on a region in a molecule that is electron deficient.

In this case, the attack is going to occur at the point where the -SH moiety is attached as shown in the image attached. Since the reaction occurs by the SN2 mechanism; The product is

R,RChiral

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H2O2→H2O+12O2
Hydrogen peroxide decomposes to produce water and oxygen according to the equation above. An experimentally determined graph for the first-order decomposition of hydrogen peroxide is provided below.
Which of the following best identifies the rate constant k for the reaction based on the information in the plot of ln[H2O2]versus time (t) ?
A. k=ln[H2O2 at t=0s
B. k=ln[H2O2]at t=500s
C. k=−(slope of plot)
D. k=−1(slope of plot)

Answers

The link between the rate constant and temperature k = A * exp(-E /(R * T)). The units of the rate constant, k, are impacted by the overall reaction. k=−(slope of the plot) option c is correct.

Are the byproducts of hydrogen peroxide's breakdown water and oxygen?

As hydrogen peroxide decomposes, water and oxygen are generated. The uncatalysed activation energy of the processes is 86 kJ/mol. MnO2 and acetanilide have activation energies of 49 and 112 kJ/mol, respectively.

How can one tell the order of a decomposition reaction?

Add the exponents of each component to find the overall reaction order. This number often falls between one and two.

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Answer:

See explanation below

Explanation:

The link between the rate constant and temperature k = A * exp(-E /(R * T)). The units of the rate constant, k, are impacted by the overall reaction. k=−(slope of the plot) option c is correct.

Are the byproducts of hydrogen peroxide's breakdown water and oxygen?

As hydrogen peroxide decomposes, water and oxygen are generated. The uncatalysed activation energy of the processes is 86 kJ/mol. MnO2 and acetanilide have activation energies of 49 and 112 kJ/mol, respectively.

How can one tell the order of a decomposition reaction?

Add the exponents of each component to find the overall reaction order. This number often falls between one and two.

Which of these qualities most likely helped Kepler construct the scientific explanation of the solar system?
a generosity and helpfulness
b igenuity and creativity
c assertiveness and flexibility
d consideration and compassion

Answers

The correct answer is A

How many grams of propane contains the same number of carbon atoms as those in 1.0g C2H5OH ?

Answers

Answer:

Exercises Example 6. How Many Moles Of Carbon Atoms And How Many Carbon Atoms Are Contained In 1.0 G Of C,H,OH

Explanation:

The mass of the propane that would have the same number of carbon atoms is  0.63 g.

What is the number of the carbon atoms?

We know that we can be able to obtain the number of the carbon atoms by the use of the simple stoichiometry of the reaction as we have it in the question that we have been asked here.

We can see that we have the molar mass of the ethanol as we can see as 46 g/mol. We have to obtain the number of moles of the ethanol that we have in the compound as follows;

Number of moles = 1 g/ 46 g/mol = 0.022 moles

Number of the carbon atoms that we have is; 0.022 moles * 2 * 6.02 * 10^23 = 2.6 * 10^22 atoms

Now the number of the grams of the propane that we have is;

2.6 * 10^22  = x * 3 * 6.02 * 10^23

Where x is the number of moles present

x =  2.6 * 10^22 / 1.806 * 10^24

x = 1.44 * 10^-2 moles

x = 0.0144 moles

Given that the molar mass of the propane is 44 g/mol

mass  =  0.0144 moles * 44 g/mol

Mass = 0.63 g

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Choose all that apply please

Answers

Atom A could be strontium (Sr), oxygen (O), or aluminum (Al).

If both elements are member of Groups 1A-8A (not the Group B elements), indicate which of the following might be correct identities for each of these atoms?Strontium is an alkaline earth metal in group 2A of the periodic table, while oxygen and aluminum are both found in group 6A. Each of these elements has a Lewis Dot diagram with two electrons in the outer shell. Atom B could be tin (Sn), nitrogen (N), or phosphorous (P).Tin is a post-transition metal in group 14A, nitrogen is a non-metal in group 5A, and phosphorous is a non-metal in group 15A. All of these elements have five electrons in the outer shell, as shown in the Lewis Dot diagram. Each of these elements are appropriate for the given diagram and can be used to identify atom A and atom B.Yes, all of the choices you provided could be correct identities for the atoms shown in the Lewis Dot Diagram. Atom A, which has 2 dots in its outer shell, could be strontium (Sr) from Group 2A, oxygen (O) from Group 6A, or aluminum (Al) from Group 3A. Atom B, which has 5 dots in its outer shell, could be tin (Sn) from Group 4A, nitrogen (N) from Group 5A, or phosphorous (P) from Group 5A.The Lewis Dot Diagram is a visual representation of the electrons in a chemical bond. It is used to determine the number of valence electrons, which then helps to identify the elements in the bond. The number of dots around the element symbol in the Lewis Dot Diagram represent the number of valence electrons in the atom's outer shell.

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Which characteristic describes most metals in the solid phase?

Answers

Non metals in the solid phase are brittle and lack metallic luster. Option 4

What are the non metals?

Let us note that the metals has to do with the elements that occur at the left hand side of the periodic table and most of them are solid. They are known to be electro positive and a lot of them are sonorous when struck as well as give out a characteristic luster. This is why the metals can be used in the making of a lot of the acoustic instruments that are used ion the playing of music as well as in the production of jewelry.

In the case of the non metals only a few of the elements are found to be solid and a lot of them can be found to be either liquid or gas and they are also known to have a low temperature range thus the boiling and the melting points of the elements can be seen to be quite and very low from the periodic table of the element.

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Missing parts;

Which characteristics describe most nonmetals in the solid phase?

1

They are malleable and have metallic luster.

2

They are malleable and lack metallic luster.

3

They are brittle and have metallic luster.

4

They are brittle and lack metallic luster.

Select the atomic models that belong to the same element.

Answers

The image a and d are the atomic models that belong to the same element.

What is an atom?

A chemical element is uniquely defined by its atoms, which are tiny pieces of substance. An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it.

Based on atomic models, the big red ball and big yellow ball represent the proton and neutron of an atom, respectively, while the small blue outer ball symbolizes the electron of an atom.

The number of neutrons in an atom of the same element can vary, while the number of protons is always the same.

Isotopy is the name given to this phenomena. Atoms that have variable numbers of neutrons but the same number of protons are called isotopes.

The atomic models at the top right and bottom left corners of these structures, respectively, represent isotopes.

They have the same number of proton but only differ in the number of neutrons. The elements have an arrangement of hydrogen atoms.

Thus, image a and d is showing of same atom.

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Name the following organic molecules (using full nomenclature):

see picture

Answers

a) pentane
b) 2-methylethane
c) 2,3-dimethylbutane
d) pent-2-ene
e) 2,3-dimethylbut-2-ene
f) 3,3-dimethylpent-1-ene
g) 1-bromo-5-methylhexane
h) 3-chloropentane
i) 1-iodopropane

These were the IUPAC rules given to me by my professor, but double check with how yours wants the molecules to be named because some have specific rules.

A gas exerts a force of 180N over an area of 36m² at a Volume of 340ml. Calculate the pressure of the gas at a Volume of 540L​

Answers

Answer:
5 Pa

Explanation:

To solve this problem, we first need to convert the volume of the gas in milliliters to liters. There are 1000 milliliters in a liter, so we can multiply the volume of the gas in milliliters by 1/1000 to get its volume in liters. This gives us a volume of 0.34 liters.

The pressure of a gas is equal to the force it exerts per unit area. The unit of pressure is the pascal (Pa). In this case, the force of the gas is 180N and the area over which it is exerting this force is 36m², so the pressure of the gas is 180N/36m² = 5 Pa.

If we change the volume of the gas to 540 liters, the pressure will not change. This is because the pressure of a gas is dependent on the force it exerts and the area over which it is exerted, and not on the volume of the gas itself. The pressure of the gas will remain 5 Pa regardless of its volume.

Draw the structures of the following molecules.
1. 1-chloro-1-butyne
2. (Z)-4-Bromo-3-methyl-3-penten-1-yne
3. 4-Hexyn-1-ol

Answers

The structures of the compounds have been found in the image attached.

What is the structures?

We know that the structure of a molecule would have to do with the way and the manner in which a compound can be written in on paper. It is a kind of a visible representation of the compound.

As such all of the atoms in the compound as well as the groups that we find in the molecule can well be represented in the structure of the compound when it has been shown as we have in the images that are attached to the answer below.

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a useful scientific name must have two characteristics:

Answers

A useful scientific name must have two characteristics and these include the following:

GenusSpecies

What is a scientific name?

In Science, a scientific name is sometimes referred to as binomial nomenclature, binominal nomenclature, or binary nomenclature and it can be defined as a formal system that is typically used for naming species of living organisms, especially by giving each a name that is composed of two (2) main parts i.e Genus and Species.

What is a species?

In Science, a species simply refers to a biological classification of related organisms that look alike or have the same (similar) characteristics and they are capable of mating (breeding) with one another in a cycle (different seasons).

In this context, we can reasonably infer and logically deduce that both Genus and Species are the two (2) main characteristics which all useful scientific names must have.

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Please help to fill these information

Answers

Information transfer entails the transmission of messages containing user information over a communication channel from a source to a sink. Information transfer is analogous to data transmission in this sense, which emphasizes more concrete, technical elements.

What is morse code?

A technique called Morse code is used in communications to encrypt text as defined sequences of two distinct signal durations, known as dots and dashes.

Before morse code communication required face-to-face interaction, reading written words, using drums, smoke signals, and semaphore devices, or sending coded communications.

Morse code was invented by Samuel. F.B Morse. The information are passed as electrical signals through Morse code. For instance through the sharing of audio files, video files or text messages etc we are transferring informations.

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PLEASE HELP please....

Answers

The most likely cause of population change between 2005 and 2010 is that more people died than were born. Option 3.

Population growth

The growth of a population is measured by a host of factors such as:

Birth rateDeath rateImmigrationEmigration

A population will experience growth if the rate of immigration is more than emigration and or if the birth rate is more than the death rate.

A population will experience a decline if the rate of emigration is more than immigration and or if the rate of birth is less than the rate of death.

From the graph, between 2005 and 2010, the population experienced a decline in its growth. Thus, three things are possible:

There has been more death than birth, orThere has been more emigration than immigrationOr a combination of the two.

Thus, from the available options, the only plausible one is that more people died than were born.

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What is the chemical equation of table salt

Answers

Answer: NaCl

Explanation:

Table salt is made up of 1 atom of sodium (Na) and 1 atom of chlorine (Cl)

superficial zone chondrocytes can get compacted under physiological loading: a multiscale finite element analysis.
a. true
b. false

Answers

The statement "Superficial zone chondrocytes can get compacted under physiological loading: a multiscale finite element analysis" is true.

Superficial zone chondrocytes are the most exposed to mechanical loading and are therefore at risk of being compacted under physiological loading. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

This means that chondrocytes in the superficial zone of cartilage are at risk of being compacted under the physiological loading that it experiences in everyday life. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

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Match each hydrocarbon class to its structure.
4
carboxylic acid
H
H
HT
H
H
H
amine
NH₂
halocarbon
H
OH
alcohol
H.
H
H.
'H
OH
'H
H-
-CI

Answers

The tile's suggested answers include amine, alcohol, carboxyl group, and halocarbon.

Gasoline is it a hydrocarbon?

Hydrocarbons are organic substances comprised of hydrogen and carbon, and include petroleum, methane gas, and coal. Alkanes are both a highly combustible chemical and the main source of fuel in the planet. Its uses include diesel, jet fuel, propane, petrol, and petroleum, to name a few.

What makes it a hydrocarbon?

The most fundamental category of organic compounds is referred to as a hydrocarbon. As their name implies, they are exclusively made up of the elements hydrogen and carbon. Atoms surround one or more core carbon atoms in hydrocarbon molecules, which are branching or chain-like in shape.

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The complete question is-

Drag each tile to the correct image. Match each hydrocarbon class to its structure. carboxylic acid amine halocarbon alcohol.

if 0.130 m naoh is slowly added to the hcl sample, in what ph range will the indicator change color? express your answers to one decimal place. enter your answers numerically, in ascending order, separated by a comma.

Answers

The pH range in which the indication will show change in color will be 5 to 8.

Adding 0.130 m NaOH to a sample of HCl can cause the pH of the mixture to range between 5 and 8. This change in pH occurs because NaOH is a basic compound and adding it to to HCl will cause the solution to become basic with the increase in conncentration.

When this happens, an indicator in the mixture will change color, indicating a shift in acidity.

This shift in acidity is caused by the NaOH neutralizing the HCl. Knowing the pH range can be useful when attempting to adjust the acidity of a mixture.

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Which of the following choices could be an isomer of a compound with an empirical formula of C₂H₆O₂?

Answers

The compound that could be the isomer of C₂H₆O₂ is CHO. Option A

What is an isomer?

We know that an isomer is the kind of compound that has the same molecular formula but does not have the same structural formula. The implication of this is that we would have to compounds that just have the same kind of the atoms but the arrangement of the atoms would not be the same.

We can then say that the isomers that we are talking about in the context of the question that we are trying to deal with here is the kind of isomers that do not have the same way in which the atoms of the elements that make up the compounds have been arranged in the compounds that are under study.

Thus, when we look up the compounds, we can see that the only empirical formula that is close to that of the compound that we have in the question as shown is the compound with the empirical formula CHO.

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Missing parts;

Which of the following choices could be an isomer of a compound with an empirical formula of C₄H₁₀O₃?

CHO

CH₂O

C₈H₂₀O₆

C₅H₁₁O₄

A scientist did a test to compare two substances: substance Q and substance R. At room temperature, both substances are liquid. When the scientist transferred the same amount of energy out of both substances, only one substance changed phase while the other did not. Which substance changed phase, and how did it change?

Answers

The substance that changed phase would have less heat capacity than the other thus the bonds in it were broken more easily.

What is a phase change?

We have to note that the phase change has to do with the conversion of a liquid to a solid or the conversion of a liquid to a gas. A phase is essentially a  given state of matter.

In the case of the question that we have here, we are told that the two substances that are tested are liquids. It is now clear that the substance that changed phase would have a lower heat capacity.

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If you leave your hand on a lightbulb while it's turn on eventually your hand get hot why is happening

Answers

If you leave your hand on a lightbulb while it is turned on, your hand will eventually get hot because heat will be transferred from the bulb to your hand by conduction.

What is conduction?

Conduction is a heat transfer process through a solid body. In other words, it is a process whereby heat is transmitted through the movement of particles that are in contact with one another.

When a lightbulb is turned on, electrical energy is converted into light energy and this lights up the bulb. Some of the energy of light is also converted to heat and this makes the lightbulb heat up.

Thus, when you leave your hand on a lightbulb while it is on, heat will be transferred to it by direct contact, a method known as conduction.

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5. Last year the US produced 1.84 X 1010 lbs of phosphoric acid to be used in the manufacture of fertilizer. The average cost of the acid is $318/ton. What was the total value of the phosphoric acid produced?

Answers

Last year the US produced 1.84 X 1010 lbs of phosphoric acid to be used in the manufacture of fertilizer. The average cost of the acid is $318/ton. The total value of the phosphoric acid produced is $ 2925600000.

What is the average cost ?

The term average cost is defined as the ratio of total cost to the number of units of a good produced. It is mathematically expressed as AC = TC/Q.

The average cost of the acid = $318/ton

18.4 × 10⁹ lbs = ( 18.4 × 10⁹ ) / 2000 tons  

Cost = [( 18.4 × 10⁹ ) / 2000 ] × 318  

Cost = $ 2925600000

Thus, The average cost of the acid is $318/ton. The total value of the phosphoric acid produced is $ 2925600000.

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how is called transition of a substance directy from solid to gas

Answers

Answer:

Sublimation is the transition of a substance directly from the solid phase to the gas phase without passing through the intermediate liquid phase.

The following reaction will occur Na(s) + AgCl(aq) → Ag(s) + NaCl(aq)
True or False
True
False

Answers

The following reaction will take place: Na(s) + AgCl(aq) → Ag(s) + NaCl(aq). This assertion is accurate. Silver (Ag) and sodium chloride are created when sodium (Na) and silver chloride (AgCl) combine.

What is the chemistry-related hypothesis of precipitation?

Precipitation reactions are often double displacement events that result in the formation of the precipitate, a solid form of residue. The creation of insoluble salts that precipitate out of the solution results from these reactions when two or more solutions with various salt concentrations are mixed.

What is the chemistry behind precipitation?

When a compound's concentration exceeds its solubility, precipitation may result. This might result from changes in temperature, solvent evaporation, or solvent mixing. Strongly supersaturated solutions produce precipitation more quickly.

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Other Questions
Matt has 12 balloons that he wants to divide among 4 friends. Select the three statements that describe how Matt should divide the balloons. Currently, the paramount problem in the field of biomaterials, the science of replacing diseased tissue with human-made implants, is control over the interface, or surface, between implanted biomaterials and living tissues. The physical properties of most tissues can be matched by careful selection of raw materials: metals, ceramics, or several varieties of polymer materials. Even the requirement that biomaterials processed from these materials be nontoxic to host tissue can be met by techniques derived from studying the reactions of tissue cultures to biomaterials or from short-term implants. But achieving necessary matches in physical properties across interfaces between living and non-living matter requires knowledge of which molecules control the bonding of cells to each otheran area that we have not yet explored thoroughly. Although recent research has allowed us to stabilize the tissue-biomaterial interface by controlling either the chemical reactions or the microstructure of the biomaterial, our fundamental understanding of how implant devices adhere to tissues remains woefully incomplete.1. According to the passage, the major problem currently facing scientists in the field of biomaterials is(A) assessing and regulating the bonding between host tissue and implants(B) controlling the transfer of potentially toxic materials across the interface of tissue and implant(C) discovering new materials from which to construct implant devices(D) deciding in what situations implants are neededA(E) determining the importance of short-term implants to long-term stability of tissue-implant interfaces A force acts on a 3.0 kg particle in such a way that the position of the particle as a function of time is given by x=3-ft, where x is in metres and/is in seconds. The work done during the first 2s isO 240 JO 450 JO 490 JO 530 J The scatterplot below shows the relationship between the temperature, in degrees Fahrenheit, at a football game and the number of cups of hot chocolate sold during the game. Number of Cups Sold Hot Chocolate Sales 160 140 120 100 80 60 40 20 0 30 40 50 Temperature (F) -70 80 Which of the following graphs best represents the line of best fit for this data? Tim Atter Was Gershwin a jazz composer? B is between A and C. AB=50 BC=3x AC=6x25Find the value of x.25652045 If f(x)= |a-31. then f(-1) is equivalent to shown below is the reaction of an alkene with an electrophile. reaction for the mechanism step below, draw curved arrows to show electron reorganization. use the arrow tool to specify the origin and the destination of the reorganizing electrons. consult the arrow-pushing i during the _____ stage of team development, the major emphasis is on task accomplishment. What does the speaker mean in lines 6-7 when she says, "Riding scars / you can't get lost"? In the Indian boarding school poem in contract law, intent is determined by the personal or subjective intent, or belief, of a party. Solomon & Saunders, CPA's prepared the audited financial statements of Hamilton Services for the year ended December 31, 20X1 with the report thereon issued on February 5, 20X2. The firm is now in the process of performing the audit for the year ended December 31, 20X2 and anticipates that its report thereon will be issued on February 15, 20X3. Due to some financial difficulties, Solomon & Saunders, CPA's allowed Hamilton Services to defer payment of billed fees for an extended period of time. In addition, the firm delayed the billing of some fees and had Hamilton Services sign a note for the oldest fees. The face value of the note is $50,000, the interest rate is 8%, and the due date is February 1, 20X3. The fees included in the note were for services provided between November 1, 20X1 and February 1, 20X2. Based on the above, which of the following situations would impair the firm's independence with respect to Hamilton Services for the December 31, 20X2 audit engagement?Top of Form a) Fees for the preparation of the Hamilton Services tax returns for the year ended December 31, 20X1 were paid on February 10, 20X3. Th`e work on the tax return began on February 7, 20X2 and ended on February 9, 20X2. b) Fees for services provided by the firm for the period July 1, 20X2 through December 31, 20X2 were billed to Hamilton Services on March 1, 20X3. c) The $50,000 note was paid in full, including interest, on February 14, 20X3. d) All of the above would impair the firm's independence e) Neither a, b, nor c would impair the firm's independence How many times smaller is 1.2 106 than 1.47 107? 0.82 1.35 2.67 12.25 Read the stanza below from, "The song of Chattahoochee" "But oh, not the hills of Habersham, And oh, not the valleys of HallAvail: I am fain for to water the plain.Downward the voices of Duty callDownward, to toil and be mixed with the main,The dry fields burn, and the mills are to turn,And a myriad flowers mortally yearn,And the lordly main from beyond the plain Calls oer the hills of Habersham, Calls through the valleys of Hall."In 35 sentences, explain what you think this stanza means. What is the river trying to communicate to the riverbed plants that are trying to slow the river down? What is the river's purpose? How does Napoleon in Animal Farm relates to the Russian Revolution? 10. Yo(blank)11. Ellos12. Nosotros13. Ella(blank)14. T(blank)(blank)(blank)15. Ustedes16. La gente(blank)(blank)17. Toms y yomuy cordial.18. Los profesores(blank)simpticos.muy tontos.antiptica.muy generoso.(blank)cordiales.amable.muy felices.buenos. What is the difference between mass and weight on Earth? Which property is not used to simplify the following expression?(x+2)-5-7 = 5(x + 2) -7== (5x + 10) 7= 5x + (10 7=5x+3O commutative property of additionO commutative property of multiplicationassociative property of additionOO distributive property What did President Wilson do to increase support for the war effort? Have you ever left your computer feeling sore in your wrists or shoulders? Or does your neck feel strained from looking up or down at your monitor? Take a moment next time you areat your workstation to see what your setup looks like. Ergonomics is the practice of designing and arranging objects to allow for efficiency and healthy alignment of the body whileperforming tasks. By doing a little research about an ergonomic workstation and then making small changes to our work area, you can prevent muscle strains and tension, headaches,pinched nerves, and other physical disorders. For example, raise or lower your chair so your feet can touch the ground and so it is at the proper height and distance from your keyboardand mouse. Also, you might need to prop your monitor on a sturdy platform to make the screen in line with 1o your eyes so you do not have to lift or tO lower your head to see properly. OChanges like these may seem small, but having an ergonomic workstation just might save you. trip to the doctor.Which of these best states the main idea?