Calculating an equilibrium composition Consider the following reaction in a closed vessel at a pressure of 1.0 atm and to ature of 500 K isobutane + 1-butene=2,2,3-trimethylpentane T + B P (a) Dets equ (b) Set reas (c) Con fro The standard Gibbs energy and enthalpy changes for this reaction at 500 K are AG - -4.10 kcal/mol, AH -20.11 kcal/mol. (a) Determine the equilibrium composition for this system for an initial equimolar mixture of isobutane and butene. What assumptions did you make?

The equilibrium constant is the value of the reaction quotient obtained from the chemical equilibrium equation. Therefore,  K for H⁺(aq) + F(aq) ⇄HF(aq) is 15.2.

The equilibrium constant is the value of the reaction quotient obtained from the chemical equilibrium equation. It is affected by ionic strength and temperature, but is unaffected by the amounts of products and reactants in a solution.

For a process in homogeneous equilibrium, all of the reactants and products are within the same phase. For example, all of the species may be liquids, or all of them could be gases.

HF(aq)⇄H⁺(aq) + F(aq) K = 6.8x104

H⁺(aq) + F(aq) ⇄HF(aq)  K = 1/6.8x104=15.2

Therefore,  K for H⁺(aq) + F(aq) ⇄HF(aq) is 15.2.

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The estimated molarity of NaOH will be higher than the actual molarity if the KHP is moist. Because the weight of KHP is not what you think it is, water weight will cause findings of the standardization to be skewed.

If the KHP is not entirely dry, the sample's mass will be made up of both the mass of the KHP and the mass of the hydration water it has absorbed. As a result, the sample will contain less KHP than the student anticipates based on its mass.

If the unknown samples were not dried prior to analysis the percentage of the unknown sample would be lower than the actual value.

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Answer:

Chlorine

Explanation:

Because this will remove dirt and stain and it will kill microorganisms that can cause diseases.

The ratio of octene to oxygen is 1:12.

To determine the ratio of octene (C8H16) to oxygen (O2) in the given reaction, we need to examine the balanced chemical equation. However, the equation you provided does not seem to be balanced. The coefficients for each compound must be determined to achieve a balanced equation before we can calculate the desired ratio.

Assuming you meant the combustion reaction of octene, a balanced equation would be:

C8H16 + 12O2 → 8CO2 + 8H2O

From the balanced equation, we can see that for every 1 mole of octene (C8H16), we require 12 moles of oxygen (O2) to completely react.

This means that for every 1 mole of octene, we need 12 moles of oxygen to fully combust the octene and produce the corresponding amounts of carbon dioxide (CO2) and water (H2O) as shown in the balanced equation.

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Moles of Hg

2 moles produce 1 mol O2

1 mol produces 1/2mol O_2

0.006 mol produces

The coefficient of compound is,

a. 1 for C₂H₆, 2 for O₂, 1 for CO₂ and 3 for H₂O.

b. 1 for C₂H₂, 5 for O₂, 2 for CO₂ and 2 for H₂O.

In the equation C₂H₆ + O₂ ⟶ CO₂ + H₂O, there are 2 carbon atoms, 6 hydrogen atoms, and 2 oxygen atoms on the left-hand side, and 2 carbon atoms, 6 hydrogen atoms, and 3 oxygen atoms on the right-hand side. To balance the equation, we can add a coefficient of 2 to the O2 on the left-hand side, making the equation,

C₂H₆ + 2O₂ ⟶ 2CO₂ + 3H₂O

Similarly, for the second equation C₂H₂ + O₂ ⟶ CO₂ + H₂O, there are 2 carbon atoms, 2 hydrogen atoms, and 2 oxygen atoms on the left-hand side, and 1 carbon atom, 2 hydrogen atoms, and 3 oxygen atoms on the right-hand side. To balance the equation, we can add a coefficient of 2 to the CO2 and H2O on the right-hand side, making the equation,

C₂H₂ + 5O₂ ⟶ 2CO₂ + 2H₂O

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--The complete question is, Choose a coefficient for every compound.

a. C₂H₆ + O₂ ⟶ CO₂ + H₂O

b. C₂H₂ + O₂ ⟶ CO₂ + H₂O--

Answer:

4.79 g of water

Explanation:

From the reaction equation;

C2H6(g) + 7/2O2(g) ----> 2CO2(g) + 3H2O(g)

Next we convert the given masses of reactants to moles of reactants.

For ethane; number of moles = mass/molar mass= 7.82g/ 30gmol-1= 0.261 moles

For oxygen; number of moles= 9.9 g/32gmol-1= 0.31 moles

Next we determine the limiting reactant, the limiting reactant yields the least amount of product.

For ethane;

From the reaction equation,

1 mole of ethane yields 3 moles of water

0.261 moles of Ethan yields 0.261 ×3 = 0.783 moles of water

For oxygen;

3.5 moles of oxygen yields 3 moles of water

0.31 moles of oxygen yields 0.31 × 3/3.5 = 0.266 moles of water

Hence oxygen is the limiting reactant.

Mass of water produced = 0.266 moles of water × 18gmol-1 = 4.79 g of water

Friction causes the molecules on rubbing surfaces to move faster, therefore they have more energy. This gives them a greater temperature, and they feel warmer.

The term friction is defined as the resistive force that occurs when two bodies in contact move relative to one another.

Adhesion between body surfaces, and the adhesion is the molecular force that occurs when two materials come into contact with each other are the causes of friction.

Friction is an everyday force that is generated by two surfaces when they are interacting. When these surfaces slide against each other, this interaction increases the thermal energy of the two surfaces.

Thus, Friction causes the molecules on rubbing surfaces to move faster, therefore they have more energy.

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The overall change in entropy for the process is approximately -0.251 J/K.

The change in entropy can be calculated using the formula:

ΔS = nCp ln(T2/T1) + nR ln(V2/V1)

where:

n = 0.13 moles (number of moles of helium in the balloon)

Cp = 5/2R (specific heat capacity of helium gas at constant pressure)

R = 8.314 J/(mol*K) (gas constant)

T1 = 298 K (initial temperature of the helium gas)

T2 = 291 K (final temperature of the helium gas)

V1 = 3.0 L (initial volume of the balloon)

V2 = 3.5 L (final volume of the balloon)

Plugging in the values, we get:

ΔS = (0.13 mol * 5/2 * 8.314 J/(molK)) ln(291 K/298 K) + (0.13 mol * 8.314 J/(molK)) ln(3.5 L/3.0 L)

ΔS = -0.296 J/K + 0.045 J/K

ΔS = -0.251 J/K

Therefore, the overall change in entropy for the process is approximately -0.251 J/K.

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Explanation:

According to Charles Law :

\( \frac{V_1}{T_1} = \frac{V_2}{T_2} \)

\( \frac{V}{27} = \frac{1.5}{177} \)

\(V = 0.22 \: atm\)

A substance that cannot be broken down into simpler substances using any chemical means is called an "element".

An element is a pure substance that is made up of only one type of atom, and each element has a unique set of physical and chemical properties. Examples of elements include hydrogen, oxygen, carbon, gold, and iron. There are currently 118 known elements, organized on the periodic table based on their atomic structure and properties. In chemistry, a substance is a type of matter that has a constant composition and distinct properties. It is a form of matter that is made up of only one type of molecule, atom, or ion. A substance can be either an element or a compound. Elements are pure substances that cannot be broken down into simpler substances by chemical means, whereas compounds are substances that are made up of two or more different elements chemically combined in a fixed ratio.

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To indicate the distance that corresponds to the bond length of the N₂ molecule, we need to know the bond length of the N₂  molecule. The bond length of a molecule refers to the distance between the nuclei of two bonded atoms.

The bond length of N₂  is approximately 109.76 picometers (pm). Therefore, to indicate the bond length of N₂   on the horizontal axis, we can place an X at 109.76 pm.

It's important to note that bond lengths can vary slightly depending on the specific conditions of a given experiment or calculation. However, the bond length of N₂  at standard conditions is well established, and 109.76 pm is a commonly accepted value.

Knowing the bond length of a molecule is important in understanding the nature of the chemical bond between two atoms. The bond length is related to the strength of the bond, with shorter bond lengths indicating stronger bonds. The bond length of N₂ , for example, is relatively short, indicating a strong bond between the two nitrogen atoms.

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Answer:

The answer would be B

Explanation:

got it right on edge2021

A pH of 7 indicates neutrality of the solution. A solution will be neutral when it contains equal number of H+ and OH- ions. Thus, the cylinder with containing equal number of purple and pale blue balls represents the solution with pH of 7.

pH of a solution is the measure of its H+ ions concentration. Mathematically it is the negative logarithm of H+ ion concentration. pH of the solution determines the acidity or basicity of the solution.

A solution with pH of 7 is neutral. Thus having no acidity or basicity. The acid-base reaction neutralize each other forming their salt with pH of 7 and it is called neutralization reaction.

The solution with a pH below 7 is acidic and the solutions with pH above 7 are basic solutions. Bases are proton acceptors and they furnish OH- ions when ionized.

The solution with equal number of H + and OH- ions neutralize each other and thus have a pH of 7. Therefore, the cylinder with equal number of blue and purple balls represents the neutral water.

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To determine the new water level in the cylinder after adding the silver and gold objects, we need to consider the displacement of water by the objects. Therefore, the new water level in the graduated cylinder would be approximately 82.85 ml.

The principle of displacement states that the volume of water displaced by an object is equal to the volume of the object itself. Therefore, we can find the new water level by adding the volumes of the silver and gold objects to the initial water level. First, let's calculate the volume of the silver and gold objects. The density of silver is approximately 10.5 g/ml, and the density of gold is approximately 19.3 g/ml. Volume of silver object = Mass of silver object / Density of silver = 50.0 g / 10.5 g/ml = 4.76 ml. Volume of gold object = Mass of gold object / Density of gold = 50.0 g / 19.3 g/ml = 2.59 ml. Now, we can calculate the total volume of the silver and gold objects: Total volume = Volume of silver object + Volume of gold object = 4.76 ml + 2.59 ml = 7.35 ml. Finally, to find the new water level, we add the total volume of the objects to the initial water level: New water level = Initial water level + Total volume = 75.5 ml + 7.35 ml = 82.85 ml. Therefore, the new water level in the graduated cylinder would be approximately 82.85 ml.

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The kinetic molecular theory of matter explains the physical properties of matter and how they relate to their molecular structures. This theory states that matter is made up of tiny particles, called molecules, that are always in constant motion, even when in a solid state.

The kinetic molecular theory of matter helps in explaining the properties of matter and how it relates to the molecular structures of matter. According to this theory, the particles that make up matter are in constant motion regardless of their state of matter, and their motion is related to the state of matter they exist in. The theory is divided into three main postulates as follows:1. Matter is made up of tiny particles called molecules that are in constant motion, even when in a solid state.2. The movement of these particles increases with an increase in temperature, resulting in an increase in the kinetic energy of the particles.3.

The collisions between these particles and the walls of the container they are in result in the pressure exerted by the gas. The relationship between heat, energy, and temperature as part of the kinetic molecular theory is as follows:Heat is the transfer of energy between different systems, whereas temperature is the measure of the average kinetic energy of the particles in a system. This means that as heat is transferred into a system, the particles in that system will gain kinetic energy, which will lead to an increase in temperature.

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Answer:

Combustion

Explanation:

Answer:

KMnO4

Explanation:

The chemical formula for potassium permanganate is KMnO4.

꧁༒αηѕωєяє∂ ву gσ∂кєу༒꧂

Answer:

KmN04

Explanation:

.....,...........

Answer:

Tree's absorb so much carbon dioxide from the atmosphere and store the carbon in their biomass

The rate at which the nitrogen dioxide, NO₂ will effuse is 64 mL/s

This states that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass i.e

R ∝ 1/ √M

R₁/R₂ = √(M₂/M₁)

Where

Applying the Graham's law of diffusion equation, we have:

R₁/R₂ = √(M₂/M₁)

82 / R₂ = √(46 / 28)

Cross multiply

82 = R₂√(46 / 28)

Divide both sides by √(46 / 28)

R₂ = 82 /√(46 / 28)

R₂ = 64 mL/s

Thus, nitrogen dioxide, NO₂ will effuse at 64 mL/s

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To prepare the desired solution, the mass of the solute (sucrose) must be calculated based on the desired percentage concentration and the total mass of the solution.

To prepare a 15% by mass solution with a total mass of 650g, the mass of sucrose needed to be dissolved into water is 97.5 grams. This can be calculated by multiplying the total mass of the solution by the percent by mass concentration as shown below:

Mass of sucrose = 15% x 650g = 97.5g.

Therefore, 97.5g of sucrose needs to be dissolved into water to prepare a 15% by mass solution with a total mass of 650g.

To prepare a 15% by mass solution with a total mass of 650g, 97.5 grams of sucrose needs to be dissolved into water. This is determined by multiplying the total mass of the solution (650g) by the percentage by mass concentration (15%). The resulting mass of sucrose (97.5g) is then dissolved into the water to make the solution.

In conclusion, to prepare the desired solution, the mass of the solute (sucrose) must be calculated based on the desired percentage concentration and the total mass of the solution.

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Answer:

2MgO is the chemical formula of the product formed

Dates are collected carefully and with a lot of laborious work, much as how they are cultivated. After adding water and filtering the homogenized result with a cellulose filter aid, date fruits are removed using a wet grinding process.

The polysaccharide cellulose, an organic molecule with the formula n, is made up of a linear chain of several hundred to many thousands of D-glucose units that are covalently bonded.

Plant cell walls include the carbohydrate cellulose. The structure of the carbohydrate is polysaccharide. A lengthy chain of many sugar units joined by chemical bonding makes up a polysaccharide. Examples of polysaccharides include starch, chitin, glycogen, cellulose, and glycogen.

Use of a reach lift varies greatly depending on the size of the trees. This lift carries an employee up the trees to gather the date bunches. The filtering aid might be date pits. Before filtering, a fermentation may be performed.

Thus, Dates are collected carefully and with a lot of laborious work, much as how they are cultivated.

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Answer:

We use aluminum almost every day, aluminum can be used for juice boxes, chip bags, cans, foils, electronics, and even our cars have aluminum.

Explanation:

Answer:

pOH = 3.18

Explanation:

The equilibrium of a weak base as NX3 is:

NX3(aq) + H2O(l) ⇄ HNX3⁺(aq) + OH-(aq)

Where the equilibrium constant, Kb, is:

Kb = 2.5x10⁻⁶ = [HNX3⁺] [OH-] / [NX3]

As both HNX3⁺ and OH- ions comes from the same equilibrium, their concentrations are the same, that is:

[HNX3⁺] = X

[OH-] = X

And: [NX3] = 0.175M:

2.5x10⁻⁶ = [X] [X] / [0.175M]

4.375x10⁻⁷ = X²

X = 6.61x10⁻⁴M = [OH-]

As pOH = -log [OH-]

The order of increasing bond length is B22 > B2 > B2-.In summary, the order of increasing bond order is B22 < B2 < B2-, the order of increasing bond energy is B22 < B2 < B2-, and the order of increasing bond length is B22 > B2 > B2-.

Molecular orbital (MO) diagrams are used to assess the bonding in a molecule and provide information about bond order, bond energy, and bond length. In this question, we have to rank B22, B2, and B2- in order of increasing bond order, bond energy, and bond length using MO diagrams.

Bond order: Bond order refers to the number of chemical bonds between two atoms. It is determined by the number of bonding electrons minus the number of antibonding electrons divided by two. A higher bond order indicates stronger bonding between two atoms. B22 has a bond order of 1, B2 has a bond order of 1, and B2- has a bond order of 2. Therefore, the order of increasing bond order is B22 < B2 < B2-.

Bond energy: Bond energy refers to the energy required to break a chemical bond. A higher bond energy indicates a stronger bond. B22 has the weakest bond and the smallest bond energy because it is composed of two atoms in the ground state, which do not bond. B2 has a slightly stronger bond than B22, but the bond energy is still low. B2- has the strongest bond because it has the highest bond order. Therefore, the order of increasing bond energy is B22 < B2 < B2-.

Bond length: Bond length refers to the distance between the nuclei of two bonded atoms. A shorter bond length indicates a stronger bond. B22 has the largest bond length since it has no bond. B2 has a slightly shorter bond length than B22. B2- has the shortest bond length since it has the highest bond order.

Therefore, the order of increasing bond length is B22 > B2 > B2-.In summary, the order of increasing bond order is B22 < B2 < B2-, the order of increasing bond energy is B22 < B2 < B2-, and the order of increasing bond length is B22 > B2 > B2-.

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Answer:

0.72 good luck with the answer

Answer:

Part 1

In the solar system, most asteroids are;

(C) Between Mars and Jupiter

Part 2

False: An object made of ice, dust, and rock that orbits the Sun is called a Comet

Explanation:

Part 1

The main asteroid belt which is between Mars and Jupiter is the path of the orbit of about 1.9 million asteroids which make up the majority of the known asteroids

Part 2

An asteroids are composed of mainly silicate rocks, and clay for C-type asteroids, nickel-iron, silicate material for the S-type asteroid and nickel-iron, iridium, gold, platinum, palladium, and magnesium for the M-type asteroids

Asteroids are also known to contain olivine and pyroxene minerals, and some asteroids contain water-ice within their interiors

However, a Comet is primarily composed of ice, dust and and rock that orbit the Sun which are as big as a small town in their frozen state.

Therefore, an object made of ice, dust, and rock that orbits the Sun is called a Comet.

Answer:

Its C between Mars and Jupiter

Explanation:

Most asteroids are found in the main asteroid belt located between Mars and Jupiter

The very common form of calcium has 20 protons, 20 neutrons, and 20 electrons. This indicates that there are 20 protons in each calcium atom.  and will have 20 electrons.

The chemical element calcium has the atomic number 20 and the symbol Ca. Calcium is a reactive metal that reacts with air to form a dark oxide-nitride layer because it is an alkaline earth metal. It has the most similar chemical and physical properties to its heavier homologues, strontium and barium.  Calcium is a solid at room temperature and is categorized as an alkaline earth metal.

A chemical element is uniquely defined by its atom, a particle of matter. An atom has a central nucleus that is surrounded by one or more electrons with a negative charge. Protons and neutrons, two relatively heavy particles, are found in the positively charged nucleus.

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Answer:

B

Explanation:

Copper is lower on the activity series, so it can't replace nickel in this reaction. Therefore, no reaction will occur.