A buffer solution with pH 4.40 is prepared with 0.78 M NaC2H3O2 and (x)M HC2H3O2. Ka for HC2H30 is 1.8×10^-5. what is the concentration of HC2H3O2 in the buffer?
concentration of HC2H3O2 in the buffer solution is 0.51 M.
xM = 0.51M
To solve for x, we need to first calculate the concentrations of the two species that are present in the buffer solution.
The concentration of NaC2H3O2 is 0.78 M, as given.
The concentration of HC2H3O2 can be calculated from the Henderson-Hasselbalch equation:
pH = pKa + log([HC2H3O2]/[NaC2H3O2])
Rearranging this equation and solving for [HC2H3O2], we get:
[HC2H3O2] = [NaC2H3O2] x 10^(pH - pKa)
Plugging in the given values, we get:
[HC2H3O2] = 0.78 x 10^(4.40 - (-4.7))
[HC2H3O2] = 0.78 x 10^(9.1)
[HC2H3O2] = 0.51 M
Therefore, the concentration of HC2H3O2 in the buffer solution is 0.51 M.
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what mass (in grams) of mg(no3)2 is present in 98 ml of a 0.120 m solution of mg(no3)2?
As per the details given in the question we know that, the weight of 2.49 g of Mg(NO3)2 is 107.7 ml in a 0.156 m liquid of Mg(NO3)₂.
Mass is known as the amount of atoms that make up every item or body. Whatever we can see is the mass. The examples of the objects with mass include a chair, a sofa, your bed, a soccer, a tumbler, and even air. The mass of a thing determines whether it is light or heavy.
The mass of an item may be calculated by multiplying its density by its volume since densities is a metric of mass per volume.
As per question,
Given Molarity of Mg(NO₃)₂ = 0.156 M
Given volume = 107.7 mL = 0.1077 L
Given Molarity = moles / volume
Calculation:
0.156 = moles / 0.1077
moles = 0.0168
Given, molar mass of Mg(NO₃)₂ = 148.3 g/mol
As per the formula,
moles = mass / molar mass
0.0168 = mass / 148.3
So the mass of Mg(NO₃)₂ = 2.49 g
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If a 3.1g ring is heated using 42 J, its temperature rises 17.9°C. Calculate the
specific heat capacity of the ring.
Answer:
0.756 J/g°C
Explanation:
The specific heat capacity of any material is defined as the quantity of heat (J) absorbed per unit of mass (kg) with an increase in temperature is 1 °C.
Specific heat capacity is defined as:
[tex]S = \frac{Q}{m*deltaT}[/tex]
given, Q = 42J, m(mass) = 3.1g and ΔT = 17.9 °C
[tex]S = \frac{42.0}{3.1*17.9}[/tex]
S = 0.756 J/g°C
Two substances that are soluble in each other in all proportions are called:a) saturated.b) immiscible.c) supersaturated.d) miscible.e) unsaturated.
Explanation:
saturated b is substance that are soluble
Solid aluminum Aland chlorine Cl2 gas react to form solid aluminum chloride AlCl3. Suppose you have 11.0 mol of Al and 1.0 mol of Cl2 in a reactor. Calculate the largest amount of AlCl3 that could be produced. Round your answer to the nearest 0.1 mol.
The largest amount of AlCl₃ that could be produced from the reaction of solid aluminum Al and chlorine Cl₂ gas = 1.3 mol.
Write the equation that is properly balanced:
2Al(s) + 3Cl₂(g) ===> 2AlCl₃(s)
When both reactants are provided in equal proportions, you must first determine which one, if either, is the limiting one.
Al moles = 11.0
Cl₂ moles = 1.0
Al : Cl₂ has a mole ratio of 2:3, meaning that you require 1.5 times as much Cl₂ as Al.
Cl₂ is limiting in this situation since it alone will determine how much product is produced because this is NOT the case.
Since the question specifically asks for the quantity of AlCl₃ (in moles), we can simply apply dimensional analysis and stoichiometry to determine the solution:
= (2.0 mol Cl₂ x 2 mol AlCl₃) / (3 mol Cl₂)
= 1.3 mol
So, the largest amount of AlCl₃ that could be produced = 1.3 mol
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The emission spectrum of the hydrogen atom shows that:
a. A continuous spectrum of all visible wavelengths is emitted, demonstrating the photon nature of light.
b. The energy of the photon emitted is equal to the energy of the hydrogen atom.
c. Discrete emission lines at very specific wavelengths are observed, because only specific H atom energy levels are possible.
d. All emitted radiation is in the infrared part of the electromagnetic spectrum
e. The positive charge of the H atom is concentrated into a small nucleus.
The emission spectrum of the hydrogen atom shows that: c. Discrete emission lines at very specific wavelengths are observed, because only specific H atom energy levels are possible.
The emission spectrum of the hydrogen atom shows the specific wavelengths of light that are emitted when the electron in the hydrogen atom jumps from a higher energy level to a lower energy level. These wavelengths correspond to specific colors of light, and are unique to hydrogen.
The most well-known example is the Balmer series, which produces the visible lines in the hydrogen spectrum. This is used to identify the presence of hydrogen in stars and other astronomical objects.
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Explain why a covalent compound has to be given to us; why can't we predict them as we would an ionic compound?
The covalent compounds do not have the same properties as the ionic compounds so they must give them to us.
Why can't we predict an covalent compound?We know that the way that a compound would behave would depend on the kind of bonds that we have in the molecules of the substance that we have.
Let it be known that the ionic bonds are found in the compounds that are soluble in water and do have a high m,elting and boiuling npoint which means that they can be identified when they are disolved in water as well as when they are heated.
The covalent compounds do lack all of these properties and as such they can not be easily identified as we can identify the ionic compounds. This is the difference that exists between the ionic compounds and the covalent compounds that we know about.
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1)what is the electron pair geometry for I in ICl2^-? 2)Draw the lewis structure showing lone pairs, if there are any. 3)What is the geometry for ICl2^-?
The electron pair geometry for I in ICl2^- is trigonal bipyramidal.
What is the electron pair geometry for I in ICl2^-?The electron pair geometry for I in ICl2^- is linear.The Lewis structure for ICl2^- is as follows: I-Cl-Cl.The I atom has two lone pairs of electrons.The geometry for ICl2^- is linear.The electron pair geometry for I in ICl2^- is trigonal bipyramidal. In this trigonal bipyramidal geometry, the I atom is surrounded by three lone pairs and two chlorine atoms, forming a total of five electron domains.The overall geometry of the molecule is linear, with the two chlorine atoms at the end of the linear structure and the I atom at the center.The Lewis structure for ICl2^- is shown below. In the structure, the I atom has three lone pairs and is surrounded by two chlorine atoms.The single bonds between the I and Cl atoms are represented by a single line, and the lone pairs are represented by two dots on either side of the I atom.Overall, the geometry of ICl2^- is linear.This linear geometry is due to the fact that the I atom is surrounded by five electron domains, with three lone pairs and two chlorine atoms.This geometry results in a linear structure with the chlorine atoms at either end and the I atom in the center.To learn more about The electron pair geometry refer to:
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What is the name of the acid whose formula is H2CO3?Spell out the full name of the acid.
The acid whose formula is H2CO3 is called carbonic acid. It is a weak acid that is formed when carbon dioxide (CO2) dissolves in water (H2O).
It is a common acid found in nature and is present in many carbonated beverages, as well as in the human body as a component of blood. Carbonic acid is a weak acid and it forms the bicarbonate ion (HCO3-) when it dissociates in water. It plays an important role in regulating the pH of blood and other body fluids.
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What are the products of the following reactions? Part A + Cl excess CH2Cl2
The reaction between Part A and an excess of CH2Cl2 in the presence of a chlorine source will produce a substitution reaction, yielding two products: Part A-chloride and CH3Cl.
Part A-chloride is a product of a substitution reaction between Part A and an excess of CH2Cl2 in the presence of a chlorine source. It is represented by the molecular formula C2H5Cl. CH3Cl, or chloromethane, is also a product of the substitution reaction and is represented by the molecular formula CH3Cl.
A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. During a chemical reaction, bonds between atoms are broken and formed, resulting in different substances with different properties. Chemical reactions are often accompanied by the release or absorption of energy, which can be in the form of heat, light, or sound.
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Draw a structural formula for 3-propyl-1-hexene. . You do not have to consider stereochemistry . You do not have to explicitly draw H atoms. .(//>//. 000-ie CHỈ CnemDcodio Submit Answrer Try Anothor Morslon 3 item attempts remaining
The structural formula for 3-propyl-1-hexene would be:
H3C |CH2-CH-CH2-CH2-CH-CH2 |CH3
It is an alkene with a propyl group (CH3-CH2-) attached to the third carbon atom. And the alkene carbon atoms are connected in hexane backbone.
An alkene with a propyl group is a hydrocarbon molecule that contains a carbon-carbon double bond (alkene) and a propyl group, which is a three-carbon chain (CH3-CH2-CH2-) attached to the alkene. The alkene carbon atoms are connected in a chain of varying length. These molecules are important in the chemical industry as they can be used to produce a wide range of products, such as polymers, fuels, and pharmaceuticals, through various chemical reactions such as polymerization and oxidation. They also have a reactive functional group which allow them to participate in different chemical reactions. They are also known as propyl alkenes or propenyl alkenes.
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the absorption spectrum of a certain red dye is shown above. if a student analyzing the same concentration of this dye neglected to wipe fingerprints off the cuvette before placing it in the spectrophotometer, how would the absorption curve be affected? responses
The peak of the contour would be higher because more light would be absorbed.
What is a spectrophotometer and what does it measure?A spectrophotometer is a device that analyzes the light that passes through or reflects back after illuminating a beam of light to detect color. For practically every sample, including liquids, polymers, paper, metal, fabrics, and painted samples, spectrophotometers can offer color information.
What is the main purpose of spectrophotometer?To determine the amount of a substance in an aqueous solution, spectrophotometers detect light intensity in terms of wavelength.
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The half-life of bromine-74 is 25 min. How much of a 4.0 mg sample is still active after 75 min?
a. 0.50 mg
b. 1.0 mg
c. 2.0 mg
d. 0.25 mg
e. 4.0 mg
From a 4.0 mg sample, 0.50 mg of bromine is still active after 75 minutes.
Determine the number of times the radioisotope's disintegration occurred.
number of periods =[tex]\frac{time}{half life}[/tex]
number of periods = [tex]\frac{75min}{25min}[/tex] = 3
Each time, half of the initial quantity disappears.
4.0mg → [tex]\frac{4.0}{2}[/tex] → [tex]\frac{4.0}{4}[/tex] → [tex]\frac{4.0}{8}[/tex] = 0.50mg
Keep in mind that each arrow denotes one interval.
The amount of time it takes for the concentration of a given reactant to reach 50% of its initial concentration is known as the half-life of a chemical reaction (i.e., the time taken for the reactant concentration to reach half of its initial value). It is commonly expressed in seconds and is represented by the sign "t1/2."
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How many total electrons are there in a Ni2+ ion?
also how many protons are in an ion with 18 electrons and a -1 charge?
The atom contains 18 electrons. Consequently, there will be 18 protons. Exists only one negative charge. It follows that there will be 17 protons. an electric charge Having a negative charge, an electron is a particle.
The negative charge is 1.602 10-19 coulomb in magnitude. A proton's mass is 1/1837 that of an electron. amount of electrons. The electron is a subatomic particle and a representative of the first generation of lepton particles. They are considered the most basic types of atoms because they don't have any identifiable pieces or structures. The electron is denoted by the sign e- and has one negative elementary charge. An electron's properties are unrelated to or unaffected by the gas in the discharge tube.
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Rank these elements according to first ionization energy (highest to lowest) : Ne, F, O, N, C, B, Be, Li. HINT: There is a general trend for ionization energy within a period of the periodic table. However, elements with a filled s or half-filled p subshell have a higher ionization energy than expected by the general trend.
The order of the elements according to first ionization energy (highest to lowest) is F, O, N, Ne, C, B, Be, Li.
The first ionization energy is the amount of energy required to remove the most loosely bound electron, the valence electron, of an atom or a positive ion. In other words, it is the energy required to convert a neutral atom into a cation by removing an electron. It is typically measured in units of electronvolts (eV) or kilojoules per mole (kJ/mol).
The first ionization energy generally increases across a period, however, elements with a filled s or half-filled p subshell have a higher ionization energy than expected by the general trend.
Fluorine has a half-filled p subshell, which makes it have a higher ionization energy than its nearest neighbors, O and Ne. Similarly, Oxygen has a half-filled p subshell, which makes it have a higher ionization energy than its nearest neighbors, N and Ne.
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this reaction is an example of conjugate addition of a nucleophile to an α,β-unsaturated carbonyl.
Yes, it is correct, this reaction is an example of conjugate addition of a nucleophile to an α,β-unsaturated carbonyl.
In this type of reaction, a nucleophile attacks the carbon atom in the carbonyl group that is adjacent to the double bond (the α-carbon), forming a new carbon-carbon bond and creating a tetrahedral intermediate. The intermediate then collapses, resulting in the formation of a new carbon-carbon bond and the addition of the nucleophile to the double bond. An α,β-unsaturated carbonyl is a compound that contains a carbonyl group (C=O) and a double bond (C=C) in which the carbonyl carbon (C=O) and the double-bonded carbon (C=C) are adjacent to each other. An example of an α,β-unsaturated carbonyl compound is an unsaturated aldehyde or unsaturated ketone. These compounds are highly reactive and can undergo a variety of reactions such as conjugate addition, electrophilic addition, and nucleophilic addition reactions.
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Convert each Fischer projection to a perspective formula Part A CH,CH Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars, including charges where needed. The single bond is active by default. Show the appropriate stereochemistry by choosing the dashed or wedged buttons and then clicking a bond on the canvas. ileini Cl Marvin JS Br Submit Previous Answers Request Answer
The perspective formula for Part A is: (R)-3-chloro-2-methylpentane.
Converting a Fischer projection to a perspective formulaThe Fischer projection of Part A, CH2CH2, is a linear molecule with two carbon atoms and four hydrogen atoms.In the perspective formula, this molecule is represented as CH3CH3.The two carbon atoms are connected by a single bond, and each carbon atom is bonded to three hydrogen atoms.The perspective formula shows that this molecule is an alkane with a straight-chain structure.Each carbon atom has four bonds, two of which are single bonds to hydrogen atoms and two of which are double bonds to other carbon atoms.This molecule is non-polar, as the carbon atoms are equally bonded to the hydrogen atoms and thus the molecule has no overall charge.Part A: The Fischer projection of CH,CH can be converted to the perspective formula ileini Cl. The molecule shown in the Fischer projection is a chiral molecule with two distinct stereocenters. It can be drawn in a perspective formula as shown in the image below.The two chiral centers are labeled with the letter ‘R’ to denote the right-handed configuration and the letter ‘S’ to denote the left-handed configuration.The molecule is composed of four atoms, two methyl groups (CH3) and two chlorine atoms (Cl). The methyl groups are attached to the two stereocenters, while the chlorine atoms are attached to the other two stereocenters. The overall shape of the molecule is a planar, tetrahedral shape.To learn more about converting a Fischer projection to a perspective formula refer to:
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Benedict College E360 xG The number of second o x The cis isomer of the 1.3-diethyl cyclobutane is: CHyCH2 CH CH CH CHy CH CHs OA ?? oc Which is more stable,cis-1-ethyl-3-methylcyclohexane or trons-1-ethyl-3-methylcyclohexane? O cis trans The number of second degree (2") hydrogens in the structure below is ViewSonic
A cyclic diallylamine called 1-ethyl-3-methylcyclohexane is a feedstock used to create methicillin-resistant Staphylococcus aureus (MRSA).
Describe trons-1-ethyl-3-methylcyclohexane or methylcyclohexane.An organic substance with the chemical formula CH3C6H11 is methylcyclohexane. It is a white liquid with a little odor that is categorized as a saturated hydrocarbon.As a solvent, methylcyclohexane is employed. Toluene is the principal product of its conversion in naphtha reformers. [4] Some correction fluids (like White-Out) also use methylcyclohexane as a solvent.Because one methyl group is attached to one carbon of the cyclohexane ring, methylcyclohexane is a monosubstituted cyclohexane.This monosubstituted methylcyclohexane has the lowest energy form when the methyl group is located equatorially as opposed to axially.The idea of A value embodies this equilibrium. Because there are axial hydrogen atoms on the same side of the ring while the methyl group is in the axial position, there is steric crowding (steric strain) experienced by the methyl group (known as the 1,3-diaxial interactions).To know more about methylcyclohexane visit:
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Consider the following reaction:
NO+O3?NO2+O2,rate=k[NO][O3]
A. What is the overall reaction order?
B. What are the units of the rate constant k for this reaction?
C. What would happen to the rate if [NO] were doubled?
D.What would happen to the rate if [O3] were doubled?
A. The overall reaction order for the reaction NO + O3 → NO2 + O2 is second order.
B. The units of the rate constant k for this reaction are L/mol*s, where L is the unit of concentration, mol is the unit of amount of substance and s is the unit of time.
C. If [NO] were doubled, the rate of the reaction would also double. This is because the rate of the reaction is directly proportional to the concentration of NO. Therefore, doubling the concentration of NO would double the rate of the reaction.
D. If [O3] were doubled, the rate of the reaction would also double. This is because the rate of the reaction is directly proportional to the concentration of O3. Therefore, doubling the concentration of O3 would double the rate of the reaction.
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Balanced Chemical Equation: hclo3(aq)+hbr(aq)→hcl(aq)+br2(g)+h2o(l)
The balanced chemical equation of HClO₃ + HBr → HCl + Br₂ + H₂O is HClO₃ + 6HBr → HCl + 3Br₂ + H₂O.
HClO₃ + HBr → HCl + Br₂ + H₂O
To balance number of O atoms
HClO₃ + HBr → HCl + Br₂ + 3H₂O
To balance number of H atoms
HClO₃ + 6HBr → HCl + Br₂ + 3H₂O
To balance number of Br atoms
HClO₃ + 6HBr → HCl + 3Br₂ + H₂O
This is the balanced equation.
It represents the neutralization reaction between hydrochloric acid (HClO3) and hydrobromic acid (HBr) to form hydrochloric acid (HCl), bromine (Br2) and water (H2O).
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If calcium reacts with a nonmetal, what will the charge of the calcium cation be?
If calcium reacts with a nonmetal, the charge of the calcium cation be +2. Calcium is metal and when it reacts with non metal ionic compound is formed.
What is non metal ?The term non-metals are defined as elements on the right side of the periodic table. Non-metals may be gases, liquids or solids. Non-metals are dull, not shiny like metals. Calcium is an example of a non-metal.
When the calcium donates its electrons, it becomes electron-deficient species and has 2 more protons than electrons. That positively charged calcium ion is called as a cation.
Calcium donated two electrons to the nonmetal and it has +2 charge.
Thus, If calcium reacts with a nonmetal, the charge of the calcium cation be +2.
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Which of the following compounds is insoluble in water? O NH4Cl O KCI O CoCl2 O PbCl2 O Licl
PbCl2 is insoluble in water.
Which of the following compounds is insoluble in water?PbCl2 is insoluble in water. PbCl2, also known as lead chloride, has a low solubility in water, with a solubility of 0.2 g/L at 25°C.This is due to the strong ionic bond between the lead and chlorine atoms, forming a stable ionic lattice which is difficult to break apart.The ionic bond is much stronger than the hydrogen bonds between water molecules, thus preventing the lead chloride from dissolving.Additionally, the large size of the lead cation and the strong attractive forces between the chloride anions and water molecules further contribute to the insolubility of lead chloride in water.In contrast, the other compounds listed are all soluble in water.Ammonium chloride, potassium chloride, and cobalt chloride all have relatively low ionic bond strengths, and their ions are small enough to be separated by the water molecules.Lithium chloride is also soluble in water due to the presence of the small lithium cation.To learn more about PbCl2 is insoluble in water refer to:
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What is the molecular geometry of the ClF4− ion?
Select one:
a. trigonal pyramidal
b. seesaw
c. square planar
d. square pyramidal
e. tetrahedral
Square planar is the molecular geometry of the ClF4− ion.
How is molecular geometry discovered?Determine the Molecule's ShapeSketch out the Lewis Structure.Determine if they are lone pairs of electrons or bond pairs of electron groups by counting the number of electron groups.Please identify the electron-group geometry.The molecular geometry is determined by examining the locations of the other atomic nuclei surrounding the central one.Tetrahedral CCl4 molecules have symmetric charge distributions everywhere around the center atom. CCl4 is hence nonpolar.With two longer and more ionic axial links and two shorter and more covalent equatorial connections, the ClF4+ cation forms a pseudotrigonal bipyramidal structure.To learn more about Square planar refer to:
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In an experiment, Joseph finds that amount of a chemical needed is directly related to the time of its reaction with a certain catalyst. If he has 12 grams of the chemical and the reaction time was second, what amount of chemical is needed to have a reaction that lasts 3 seconds
72 grams amount of chemical is needed to have a reaction that lasts 3 seconds
y=KX
12= K.1/2
k= 24
y= 24(X)
y=24(3)
y= 72 grams
Thus, a nervous impulse or action potential is an chemical phenomena brought on by alterations in the permeability of the neuron membrane. Ions can traverse the membrane thanks to these changes in permeability. Ions are electrically charged particles, therefore modifications also affect the electric field they produce.
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Determine the shape and appropriate bond angles for a compound that has a central nitrogen atom with double bonds to an oxygen atom and single bonds to a second oxygen atom and a chlorine atom
According to the molecular geometry, the shape of of compound with central sulfur atom with two unshared pairs of electrons and single bonds to two hydrogen atoms is V-shaped and bond angle is 92.1 °.
What is molecular geometry?Molecular geometry can be defined as a three -dimensional arrangement of atoms which constitute the molecule.It includes parameters like bond length,bond angle and torsional angles.
It influences many properties of molecules like reactivity,polarity color,magnetism .The molecular geometry can be determined by various spectroscopic methods and diffraction methods , some of which are infrared,microwave and Raman spectroscopy.
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7. A vet student is told that they can give an injured cow 0.2 g of pain medication per every
100 pounds of body weight. The mature cow weighs 1473 pounds. How many mg of
pain medication should the vet student give the injured cow?
The pain medication should the vet student give the injured cow will give about 2.94mg.
What remedy do you give hurt cows?Non-steroidal anti-inflammatory drugs (NSAIDs), which are available as injections, pills to take orally, or a liquid to pour on the affected area, are the most popular pain relievers for cattle. Short-term pain management is another application for steroids, according to Funk.
In the treatment of pain brought on by arthritis or following surgery in dogs and cats, non-steroidal anti-inflammatory drugs are among the most popular and efficient medications. This group of medicines includes the brands Rimadyl, Metacam, Dermaxx, and Etogesic.
Given information,
For every 100 pounds 0.2grams
1473 pounds how many grams?
mg of pain medication = 1473 × 0.2/100
mg of pain medication = 2.94mg.
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the organic solvent thiophene is a carbon-hydrogen-sulfer compound that yields co2, h2o, and so2 when burned in an excess of oxygen. When subjected to combustion analysis, a 1.3020 g sample of thiophene produces 2.7224 g co2, 0.5575 g h2o, and 0.9915 g so2. What is the empirical formula of thiophene?
Answer:
Explanation:
b) Dimethylhydrazine is a carbon-hydrogen-nitrogen compound used in rocket fuels. When burned in an excess of oxygen, a 0.312 g sample yields 0.458 gCO2 and 0.374 g H2O.
The nitrogen content of a 0.486 g sample is converted to 0.226 g N2
Draw structures for the following 4-Isopropyl-3-methylheptane 2, 3-Dimethyl-6 -(2-methylpropyl)decane
The structure of the following are given below :
1) 4-Isopropyl-3-methylheptane :
CH₃ - CH₂ - CH₂ - CH(C₂H₆) - CH(CH₃) - CH₂ - CH₃
2) 2, 3-Dimethyl-6 -(2-methylpropyl) decane :
CH₃ - CH(CH₃) - CH(CH₃) - CH₂ - CH₂ - CH - CH₂ CH₂ - CH₂ - CH₃
|
CH₂ - CH(CH₃) - CH₃
The structure for given molecules are given as :
1) 4-Isopropyl-3-methylheptane :
CH₃ - CH₂ - CH₂ - CH(C₂H₆) - CH(CH₃) - CH₂ - CH₃
H H H C₂H₆ H H
| | | | | |
H - C - C - C - CH - CH - C - C - H
| | | | | |
H H H CH₃ H H
2) 2, 3-Dimethyl-6 -(2-methylpropyl)decane :
CH₃ - CH(CH₃) - CH(CH₃) - CH₂ - CH₂ - CH - CH₂ CH₂ - CH₂ - CH₃
|
CH₂ - CH(CH₃) - CH₃
CH₃ - CH - CH - CH₂ - CH₂ - CH - CH₂ CH₂ - CH₂ - CH₃
| | |
CH₃ CH₃ CH₂ - CH - CH₃
|
CH₃
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How is heat transfer by radiation different than transfer by convection or conduction?
Answer:
Down below
Explanation:
Heat transfer by radiation is different than heat transfer by convection or conduction because the transfer by radiation is heat being created. A colder object may then absorb, reflect, or transmitted. Convection is the process of heat moving through a fluid like water and air. Conduction is when the hotter object is touching the colder object and is heated by touch. An example is a hot burner and room temperature pan. If you put the pan on the burner, through touch, it will, eventually, become as hot as the burner.
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8
How does the section "Many Chemical And Physical Changes Are Happening In Nature relate to section "Matter Isn't Lost In
Photosynthesis"?
(A)
(B)
(C)
(D)
It provides another example of how matter is conserved within ecosystems.
It contradicts the statements that water undergoes physical changes.
It supports the claim water is cycled all over the world.
It presents a solution to the problem of water undergoing physical changes.
The section many chemical and pysical changes are Happening In nature relate to section "matter Isn't lost In photosynthesis" by the fact that,It provides another example of how matter is conserved within ecosystems.
What is mass conservation?Similar to the law of conservation of energy, the total mass of a system is conserved. Mass can neither be created nor be destroyed. However, the mass of a system can be transferred to another system or can be converted as heat energy.
Photosynthesis is the process of synthesizing chemical energy in green plants using light energy. The reaction involves the combination of carbon dioxide and water to form glucose and oxygen gas.
In this reaction, the total mass of the reactants is exactly equal to the total mass of the products. Hence, the mass is conserved. This is the case for all balanced chemical reactions and physical changes. Hence, option A is correct.
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