if 25.0 ml of 0.451 m naoh solution is titrated with 0.253 m h2so4, the flask at the endpoint will contain (besides the indicator phenolphthalein) as the principal components: a. sodium hydroxide, sulfuric acid, and water b. dissolved sodium sulfate and water c. sodium hydroxide, sodium sulfate, and water d. dissolved sodium sulfate, sulfuric acid, and water calculate how much h2so4 acid is required to neutralize naoh.

Answer:

This arrangement is called a giant ionic lattice .

Forming ionic compounds -

Answer: It form ionic bond.

Explanation: It forms when atoms of a metallic element give up electrons to atoms of a nonmetallic element. Ionic bonds form only between metals and nonmetals. That's because metals “want” to give up electrons, and nonmetals “want” to gain electrons.

According to the concept of molar mass, mass of water of hydration lost is 90 g/mole and mass of dehydrated salt is 159.68 g/mole as the mass of copper sulfate pentahydrate is 249.68 g/mole.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molar masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.

Copper sulfate along with water of hydration has mass of 249.68 g/mole.On heating , the mass of water of hydration lost =90 g/mole

∴mass of dehydrated salt=249.68-90=159.68 g/mole.

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All of the elements in the group located in Family VIIIA of the periodic table are highly unreactive.

The elements of Family VIIIA are also known as noble gas elements. Noble gases are low chemically reactive, odorless, colorless, nonflammable, and monotonic gases.

These elements have very little ability to gain or lose electrons to form ions or share electrons with other elements in covalent bonds because they contain a full octet of eight valence electrons in their highest-energy orbitals (ns2np6). That is why they are exceedingly stable and unlikely to form chemical connections.

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The trend which depicts the reactivity of most nonmetals show in a periodic table is that it  increases from left to right across the periodic table and is denoted as option C.

This is referred to as the tabular arrangement of elements into groups and periods which is according to their similar features such as reactivity, number of electron shells etc.

When considering the periodic table, the reactivity of most nonmetals such as oxygen decreases top down within groups and increases from left to right across period which is therefore the reason why it was chosen as the most correct choice.

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Answer:

B

Explanation:

c isnt right

After connecting the battery to the wire, the student brings a few pieces of iron near the iron nail. The statement which best describes what will happen to the iron pieces is that: B. The Iron nail behaves like a magnet that attracts the pieces of iron.

The law of magnetism states that the unlike (different) poles of a magnet would attract each other while like poles of a magnet would generally repel one another.

This ultimately implies that, two north (N) or south (S) poles of a magnet would repel one another while a north (N) and south (S) of a magnet would attract each other.

Based on the law of magnetism, we can reasonably infer and logically deduce that if this student should bring a few pieces of iron near the iron nail after connecting the battery to the wire, the iron nail would behave like a magnet by attracting the pieces of iron because they are oppositely charged.

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Complete Question:

After connecting the battery to the wire, the student brings a few pieces of iron near the iron nail. Which statement describes what will happen to the iron pieces?

answer choices

The battery behaves like a magnet that repels the pieces of iron.

The Iron nail behaves like a magnet that attracts the pieces of iron.

The iron nail produces electric current that attracts the pieces of iron.

The coil rotates which produces electric current that repels the pieces of iron.

Each magnesium chloride (MgCl₂) molecule dissociates into 3 ions in total.

Magnesium chloride (MgCl₂) is a salt which means that, upon dissolving in water, it will dissociate, giving positively charged metal cations (here, magnesium ions) and negatively charged anions formed from nonmetals (here, chloride ions). The balanced reaction equation for magnesium chloride (MgCl₂) dissociation looks like this:

MgCl₂(aq) → Mg²⁺(aq) + 2Cl⁻(aq)

We can see that, upon dissociation, each molecule of magnesium chloride forms a single magnesium ion (Mg²⁺) and two chloride ions (Cl⁻). So, in total, 1 + 2 = 3 ions are formed from each unit of magnesium chloride.

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There will be an excess of other reactants at the end of the reaction are always true about limiting reactants.

The reagent (compound or element) that must be completely consumed in a chemical reaction is known as the limiting reactant. Because there is no more reactant, limiting reactant is also what stops a reaction from continuing.

Limiting factors in stoichiometry are the reagents or reactants that are used by a chemical reaction before other reagents. The reactant or reagent having the lowest supply in relation to its required ratio compared to other reactants within the system is the limiting factor.

A chemical reactant known as a limiting reagent restricts the amount of product that may be produced. Based on the reagents (reactants) at hand, the limiting reagent produces the least amount of product. The theoretical yield refers to this minimum product yield.

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In order to remedy this potentially hazardous situation of Hydrochloric acid option b.  put some sodium bicarbonate on the gloves so they can be neutralized.

Hydrochloric acid, additionally known as muriatic acid, is an aqueous answer of hydrogen chloride. it's far a drab answer with a distinctively smelly odor. it's far categorized as a robust acid. It is a part of gastric acid in the digestive structures of maximum animal species, which include human beings.

Hydrochloric acid (HCl) is generally used for the neutralization of alkaline marketers, as a bleaching agent, in the food, textile, metallic, and rubber industries. it's far neutralized if launched into the soil and it rapidly hydrolyzes while exposed to water.

Hydrochloric acid is a clean, toxic liquid. it is a caustic chemical and notably corrosive, which means it right away reasons severe damage to tissues, such as burning, on touch. this text discusses poisoning from swallowing or breathing in hydrochloric acid.

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Disclaimer:- your question is incomplete, please see below for the complete question.

The hydrochloric acid utilized in this experiment can often discolor gloves if it is spilled on them during use. If this does occur, what should be done in order to remedy this potentially hazardous situation?

a. Gloves are not needed in this experiment, this question is invalid.

b. put some sodium bicarbonate on the gloves so they can be neutralized.

c. Remove the glove and wash your hand prior to putting a new pair on.

d. wash the gloves off and continue to use them.

The correct diagram is C as it is the correct electronic configuration for Sodium ion

What is electronic configuration ?

The description of the positions of the electrons around a nucleus is called an electron configuration. As we previously discovered, every neutral atom contains an equal number of protons and electrons. Now, we'll arrange those electrons such that they stand around the nucleus in a way that shows their energy and the nature of the orbital in which they are housed.

Na ( Sodium )

Atomic Number - 11

Electronic Configuration : 2,8,1

Na+ ( Sodium ion)

Electronic Configuration : 2,8

The correct diagram is C as it is the correct electronic configuration for Sodium ion

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The name of the compounds of nonmetallic elements are:

The formula of the binary compounds of nonmetallic elements are:

The formula of the compounds of nonmetallic elements are:

The formula of compounds are formulas that are used to represent the compound.

The formula of compounds uses the symbols of the elements present in the compound to represent the compound.

The moles of atoms of each element present in the compound is written in subscripts in the formula of the compound.

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The cell obtain more magnesium through Active transport.

Active transportation uses include:

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we can solve problems through trial and error

American businessman and inventor Thomas Alva Edison. He created several innovations in the production of electric power, mass communication, sound recording, and motion pictures. Thomas Alva Edison, one of history's most well-known and prolific innovators, made significant contributions to contemporary living by creating the phonograph, motion picture camera, incandescent light bulb, and telephone as well as enhancing the telegraph and telephony. The light bulb was created by Thomas Edison, who is best recognized for this invention. Edison, a brilliant inventor, made a thousand fruitless efforts to create the light bulb. How does it feel to fail 1,000 times, a reporter asked? I didn't fail 1,000 times, Edison said in response.

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Answer:

yes there R, The Earth’s outer core is in a state of turbulent convection

Explanation:

have good day

Answer:

Technically? Yes. Because the Earth's outer core is in a state of turbulent convection as the result of radioactive heating and chemical differentiation. This sets up a process that is a bit like a naturally occurring electrical generator, where the convective kinetic energy is converted to electrical and magnetic energy.

Explanation:

Brainlest, Please!

Answer:

The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans(oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust).

Explanation:

you butt is thick in kilometers

;)

Thus, the consumption of 3 L of O₂ will produce 1.5 L of CO₂.

Methane is non-toxic and poses no danger when inhaled in small amounts, but if significant amounts of the gas are allowed to replace air, the lack of oxygen could cause suffocating.

In the reaction, CH₄+2O₂⇒CO₂+2H₂O

2 moles of O₂ consumption will produce 1 mole of CO₂.

In the gaseous phase, the relationship between the amount of compound and the volume is:  PV=nRT

The volume and the amount of the gaseous compound are proportionate at the same temperature and pressure.

Thus, the consumption of 3 L of O₂ will produce 1.5 L of CO₂.

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Option C is correct. reduce reactant concentrations. shorten the time the reaction is allowed to proceed.

The reaction rate normally increases as the temperature rises. With rising temperature, the average kinetic energy of the reactant molecules rises. The minimum energy needed for an effective collision will therefore be present in a higher percentage of molecules. With rising temperatures, molecules' kinetic energy rises. The possibility of a reaction rises as molecules move more quickly and collide more frequently. This speeds up the reaction. The average kinetic energy of the individual particles of the system increases with increasing temperature. Particles move faster and collide more often per unit time as the average kinetic energy increases, and they have more energy when they collide. Both of these factors speed up the reaction.

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The type of adaptation shown by the dart frog is physiological adaptation while the one shown by the Hosta plant is structural adaptation.

Adaptation generally refers to the process by which living organisms adjust in order to continue to survive in an environment.

There are 3 main types of adaptations:

In behavioral adaptation, organisms change their behavior for their continued survival in their environments. Without these modifications, they may find it to survive and reproduce in the environment.

Physiological adaptation refers to changes that are encoded into the system of organisms. Changes that are not behavioral nor structural but ensure the continued survival of organisms in their environment.

Structural adaptation refers to the modification of physical structures for continued survival. These modifications become necessary because the environment keeps changing.

Thus, bright coloration as a warning to predators by the dart frog is a physiological adaptation while the development of big leaves that ensures that as much sunlight as possible is received by the Hosta plant is a structural adaptation.

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The gas constant is equal to R=8.314 J/mol K, while the atomic mass of helium is equal to M=4.0 g/mol. M = 4.0 g / m o l . As a result, the helium atom's rms speed is 1304.7 m/s. So, 515 m/sec is the root-mean-square speed.

The value of the square root of the sum of the squares of the stacking velocity values divided by the quantity of values is the root-mean square (RMS) velocity. The RMS velocity is the speed of a wave traveling along a certain ray path across subsurface strata with various interval velocities.

The expression v=sqrt(3RTM) and v=sqrt(3KTm), where R is the universal gas constant, T is the absolute (Kelvin) temperature, m is the molar mass, K is the Boltzmann's constant, and M is the molecular mass, gives the root mean square (R.M.S.) speed V of the molecules of an ideal gas.

Since the particles in a typical gas sample are flowing in all directions, the average velocity for that sample is zero, which is why we use the rms velocity instead of the average. This is an important formula since the particle velocity controls both the diffusion and effusion rates.

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Option A would be the right recycling program to reduce the number of synthetic materials that enter the local landfill. Hence option A would be the suitable criteria for the specialist's design.

Option A is correct because, with the providence of the knowledge to recycle synthetic materials, there will be less waste accumulation. Hence most synthetic materials can be expected to be recycled.

Option B is wrong because restricting natural materials from entering the field will further increase the use of synthetic materials. Hence there will be more accumulation of waste.

Option C is wrong because making the residents travel long distances will be tiresome, and the outcome of disposing of them will be little.

Option D is wrong because synthetic materials are valuable in various manufacturing and widely used in our daily lives. Hence we will lose the potential benefits.

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The mass number of this atom having 53 protons, 78 neutrons, and 54 electrons will be 131.

In the field of science, we can describe a mass number of an atom as simply a measure of the protons and neutrons that are to be found in the nucleus of an atom. In chemistry, the mass number is denoted by the letter 'A'.

In the above-mentioned case, the number of protons of the atom is 53 whereas the number of neutrons is 78.

In order to calculate the mass number, we will add the number of protons and neutrons. As the result of the addition of 53+78 is 131 hence, the mass number will be 131.

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The element that has in its family non-metals, metalloids, and metals, which is commonly used in the canning business and sometimes give soups a distinct taste and that is also been known to "cry" if you bend it too hard is tin.

What is tin?

Tin is a chemical element found in the periodic table with atomic number 50 and which has the symbol Sn.

The characteristics of tin include:

Because of its high resistance to corrosion and soft nature, tin has been used for a wide variety of purposes which include:

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The entropy  is -3.65 and -0.049 J per kelvin per mole respectively are the entropy of an insulated tank.

Entropy is a measure of randomness in a system. It is a state function. It can be denoted by heat supplied for a reversible system per temperature.

The final pressure will be the partial pressure of each gas in the mixture.

a) Partial pressure of nitrogen = mole fraction of nitrogen x total pressure = (0.79 mol) × (1 + 1 bar)/(0.79 + 0.29 mol) = 1.46 bar

Partial pressure of oxygen = mole fraction of oxygen x total pressure = (0.29 mol) ×(1 + 1 bar)/(0.79 + 0.29 mol) = 0.54 bar

Therefore,

ΔS of nitrogen= -R ln1.46 = -0. 38R

∆S of oxygen= -R ln 0.54= -0. 61R

ΔSuniv=−(0.79mol/0.79+0.29mol)×0.38 R−(0.29mol/0.79+0.29mol)×0.61

R=−0.27 R−0.16

R=−0.44

R=−3.65JK−1mol−1

(b) Partial pressure of nitrogen = mole fraction of nitrogen x total pressure = (0.79 mol) × (2 + 1 bar)/(0.79 + 0.29 mol) = 2.19 bar

Partial pressure of oxygen = mole fraction of oxygen x total pressure = (0.29 mol) × (2 + 1 bar)/(0.79 + 0.29 mol) = 0.80 bar

ΔS of nitrogen gas=−Rln1.46=−0.09R

ΔSof sulphur oxide =−Rln0.54=0.22R

ΔSuniv=−(0.79mol/0.79+0.29mol)×0.09R+(0.29mol/0.79+0.29mol)×0.22

R=−0.066 R+0.060

R=−0.049JK−1mol−1

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A calibration curve is used to calculate the limit of detection and the limit of quantitation, as well as the concentration of an unknown material.

The concentration of an unidentified drug can be determined using a calibration curve. Researchers and developers can use these curves to determine where an unidentified substance plots by comparing them to data points of known drugs at various doses.

A calibration curve is used to calculate the limit of detection and the limit of quantitation, as well as the concentration of an unknown material. The instrument response to a series of standard samples at various concentrations is used to produce the curve.

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The equivalent absolute temperature when it condenses will be 27.25K. and freezes at 24.65K.

To find equivalent absolute temperatures we have to use the following equation:

0°C + 273.15 = 273.15K

The main idea is to convert degree Celsius to Kelvin.

In this manner, we are going make utilize of the over condition and space within the values for at degree Celsius at which it condenses and at degree Celsius at which it solidifies.

So, the temperature at which it condenses:

-245.9°C + 273.15 = 27.25K.

Also, the temperature at which it freezes.

-248.5°C + 273.15 = 24.65K.

Absolute temperature is utilized in the application of the perfect gas law and numerous other laws of thermodynamics.

A scale for outright temperature with degree units the same as on the Celsius scale is known as the Kelvin scale; the temperature scale utilizing Fahrenheit degree units is the Rankine scale.

Appropriately, a temperature distinction of one degree on the Celsius scale compares to a temperature contrast of one degree on the Kelvin scale; additionally for the Fahrenheit and Rankine scales.

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Although part of your question is missing, you might be referring to this full question:

Substances like neon, which is a gas at room temperature and pressure, can often be liquified or solidified only at very low temperatures. At a pressure of 1 atm, Ne does not condense to a liquid until -245.9°C and does not freeze until -248.5°C. What are the equivalent absolute temperatures?

To condense: __K

To freeze: __ K

The balanced reaction equation for this redox reaction looks like this:

H₂S(aq) + Cl₂(g) → S(s) + 2HCl(aq)

First, we write what we know about the reaction:

Hydrogen sulfide (H₂S) that is dissolved in the wastewater (so the physical state is (aq)) is reacting with gaseous chlorine (so Cl₂(g)) to form sulfur (which is solid at room temperature, and does not dissolve in water, so S(g)) and chloride ions (Cl⁻). To counter their negative charge, we add the hydrogen from H₂S to chlorides, which results in HCl, which is soluble in water, so the physical state is (aq):

H₂S(aq) + Cl₂(g) → S(s) + HCl(aq)

When we look at this equation we can see that it is not balanced, because we have 2 H atoms and 2 Cl atoms on the left, and only 1 of both on the right. The easiest way to rectify this is to add "2" in front of HCl, resulting in a balanced reaction equation:

H₂S(aq) + Cl₂(g) → S(s) + 2HCl(aq)

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Both physical and chemical properties can be used for identification of chemical substance and hence all the given statements are correct.

These properties are defined as those properties which become evident during or after a chemical reaction after the identity of the substance is changed during chemical reaction.

These properties cannot be determined externally just by viewing the substance ,these change immensely after a substance undergoes a chemical change.These are used for identification of unknown substances and for building up chemical classifications.

The major chemical properties are flammability,toxicity,reactivity,acidity and heat of combustion.For a chemical property to be apparent , it is necessary that the structure of the substance is altered.

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Answer:

2.068

Explanation:

D = M/V

3.04 /1.47

= 2.068

C) It will continue on its own once begun is true for spontaneous processes.

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Answer: protons: 92

electrons: 92

1. neutrons: 234-92 = 142

2. Neutrons- 233-92 = 141

3. Neutrons 232-92= 140

Explanation:

XY + Z→ XZ + Y is an example of a substitution reaction. A substitution reaction involves the exchange of one atom for another.

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