Place the following gases in order of increasing density at STP.
N2 NH3 N2O4 Kr
a. Kr < N2O4 < N2 < NH3
b. N2 < Kr < N2O4 < NH3
c. Kr < N2 < NH3 < N2O4
d. NH3 < N2 < Kr < N2O4
e. N2O4 < Kr < N2 < NH3

Answer:

Equilibrium shifts left making more NO2

Explanation:

In Le Chatlier's Principle,  increase in volume  shifts equilibrium to side with more moles so... there's 2 moles on left and 1 mole on right, so equilibrium shifts to left making more NO2

According to chemical equilibrium and Le-Chatlier's principle , the equilibrium will shift to left with increase in concentration of NO₂.

Chemical equilibrium is defined as the condition which arises during the course of a reversible chemical reaction with no net change in amount of reactants and products.A reversible chemical reaction is the one wherein the products as soon as they are formed react together to produce back the reactants.

At equilibrium, the two opposing reactions which take place take place at equal rates and there is no net change in amount of the substances which are involved in the chemical reaction.At equilibrium, the reaction is considered to be complete . Conditions which are required for equilibrium are given by quantitative formulation.

Factors which affect chemical equilibrium are change in concentration , change in pressure and temperature and presence of catalyst.

Learn more about chemical equilibrium,here:

https://brainly.com/question/3920294

#SPJ3

Answer:

9.05 g

Explanation:

PV=nRT

Use the ideal gas equation. Substitute values.

P = 5 atm

V = 1.50 L

n = ?

R (gas constant) = 0.08206 L-atm/mol-K

T = 20.0°C

*Always convert °C to K.

T = 20.0° + 273 = 293K

Substitute values.

(5 atm)(1.50 L) = n(0.08206 L-atm/mol-K)(293K)

n = (5 atm)(1.50 L) / (0.08206 L-atm/mol-K)(293K)

n = 0.3119335... mol

Convert to grams with the given average mass of air.

0.3119335... mol x (29.0 g/1 mol) = 9.05 g

Answer:

It will not dissolve in water.

Explanation:

You're welcome

If something is insoluble it means that it will not dissolve in water. Therefore, option B is correct.

Solubility can be defined as the maximum amount of Solute that can dissolve in a known solvent at a particular temperature. By changing the temperature of the solution, we can increase the solubility of a substance. Sparingly soluble solids or liquids can be fully liquified by increasing the temperature.

Solubility depends on the nature of the given solute and the solvent. Substances such as sugar, NaCl, etc dissolve in water while substances such as naphthalene can not dissolve in water.

An insoluble substance can be defined as a substance or solid that will not dissolve in a solvent even after mixing such as sand. For example, Sand, Stones, Oil, Flour, and wax. Examples, of soluble things, are Salt, Sugar, Vinegar, Coffee, and Lemon Juice.

Learn more about solubility, here:

brainly.com/question/8591226

#SPJ2

Answer:

4NaHCO3---->2Na2CO3+2CO2+2H2O

The correct reactant ratio for the reaction 2Fe + 3Cl2 → 2FeCl3 is 2 moles of iron (Fe) for every 3 moles of chlorine (Cl2).

For such more questions on reactant ratio

https://brainly.com/question/29699609

#SPJ8

Answer:

the answer would be B :)

The correct answer is; Bonds create new elements

Chemical bonds are formed when two or more atoms are joined together to form a compound.

Chemical compounds are more stable than the respective elements from which they are formed.

Chemical bonds do not create new elements.

Learn more; https://brainly.com/question/6071754

Answer:

Of course the answer is gold

Explanation:

Gold is used for making jewellery and not aluminium,iron or copper

Answer:

copper or gold.

Explanation:

Copper is also a good material for accessories. Even in the ancient times, those who can’t afford gold jewelry wear copper jewelry instead. It offers design flexibility too due to its high ductility.

The fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

Fugacity is a measure of the escaping tendency of a component in a mixture, which is defined as the pressure that the component would have if it obeyed ideal gas laws. It is used as a correction factor in the calculation of equilibrium constants and thermodynamic properties such as chemical potential. Here we need to determine the fugacity in atm for pure ethane at 310 K and 20.4 atm and the change in the chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm. So, using the formula of fugacity: f = P.exp(Δu/RT) Where P is the pressure of the system, R is the gas constant, T is the temperature of the system, Δu is the change in chemical potential of the system.  Δu = RT ln (f / P)The chemical potential at the initial state can be calculated using the ideal gas equation as: PV = nRT    

=>  P

= nRT/V

=> 20.4 atm

= nRT/V

=> n/V

= 20.4/RT The chemical potential of the system at the initial state is:

Δu1 = RT ln (f/P)

= RT ln (f/20.4) Also, we know that for a pure substance,

Δu = Δg. So,

Δg1 = Δu1 The change in pressure is 24 atm – 20.4 atm

= 3.6 atm At the second state, the pressure is 24 atm.

Using the ideal gas equation, n/V = 24/RT The chemical potential of the system at the second state is: Δu2 = RT ln (f/24) = RT ln (f/24) The change in chemical potential is Δu2 – Δu1 The change in chemical potential is

Δu2 – Δu1 = RT ln (f/24) – RT ln (f/20.4)

= RT ln [(f/24)/(f/20.4)]

= RT ln (20.4/24)

= - 0.0911 RT Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is:

f = P.exp(Δu/RT)

=> f

= 20.4 exp (-Δu1/RT)

=> f

= 20.4 exp (-Δg1/RT) And, the change in the chemical potential between this state and a second state of ethane where the temperature is constant but pressure is 24 atm is -0.0911RT. Therefore, the fugacity in atm for pure ethane at 310 K and 20.4 atm is given by the equation: f = 20.4 exp (-Δg1/RT). The change in chemical potential between this state and a second state of ethane where the temperature is constant but the pressure is 24 atm is -0.0911RT.

To know more about chemical potential visit:-

https://brainly.com/question/31100203

#SPJ11

Answer:

a: they're used in saucepan handles 'cause they don't soften when heated and also 'cause they cant be bent easily.

b: thermosetting plastics are bad electricity conductors. they don't get moulded and are also hard and strong.

Electron orbits the nucleus.

The electric charge of the electron, a subatomic particle, is a negative one elementary charge. Due to their lack of known components or substructure, electrons, which are part of the first generation of the lepton particle family, are typically considered to be elementary particles. The proton's mass is around 1836 times greater than that of the electron.

The electron's inherent angular momentum (spin), which is measured in terms of the scaled-down Planck constant,, is one of its quantum mechanical properties. The Pauli exclusion principle states that because electrons are fermions, no two of them may be in the same quantum state. Since they can collide with other particles and can be diffracted like light, electrons share characteristics with all elementary particles.

Learn more about Electron here:

https://brainly.com/question/1255220

#SPJ4

Answer: He's right

Explanation: A. the electron

Answer:

chemical bond

Explanation:

chemical bond is the interaction that allows for atoms to join together

Answer:

c. A electron cloud is the interaction

When 70 g of carbon monoxide was reacted with 32 g of oxygen, 0.5001 moles of carbon dioxide would be produced.

We can start by using the given amounts of reactants to determine which is the limiting reactant and calculate the theoretical yield of carbon dioxide that can be produced.

The balanced chemical equation tells us that two moles of CO react with one mole of O2 to produce two moles of CO2:

2 CO(g) + O2(g) → 2 CO2(g)

The molar mass of CO is 28.01 g/mol, and the molar mass of O2 is 32.00 g/mol. Using these values, we can calculate the number of moles of each reactant:

Number of moles of CO = mass ÷ molar mass = 70 g ÷ 28.01 g/mol ≈ 2.498 mol

Number of moles of O2 = mass ÷ molar mass = 32 g ÷ 32.00 g/mol = 1.000 mol

From the balanced equation, we see that 1 mole of O2 reacts with 2 moles of CO to produce 2 moles of CO2.

Therefore, the 1.000 mole of O2 can react with 0.5000 moles of CO (2.498 mol ÷ 2), which is the limiting reactant.

The theoretical yield of CO2 that can be produced is:

0.5000 mol CO × (2 mol CO2 ÷ 2 mol CO) × (44.01 g/mol CO2) = 22.01 g CO2

Therefore, 22.01 g of carbon dioxide would be produced.

Number of moles of CO2 produced = mass ÷ molar mass = 22.01 g ÷ 44.01 g/mol ≈ 0.5001 mol

Therefore, approximately 0.5001 moles of CO2 would be produced.

To know more about moles, refer here:

https://brainly.com/question/11858379#

#SPJ11

Answer:

true

Explanation:

There are two electrons (in the 1s orbital) on both carbon and fluorine “shielding” the outer electrons from the full force of the nucleus and due to both atoms being approximately the same size (both period two) then it is this shielding effect and proton difference that is causing the electronegativity difference

A Strong Electrolyte in water is a chemical that totally ionizes in solution. An electrolyte that absorbs almost entirely in water is said to be a strong electrolyte.

A solution or solute that totally, or nearly completely, ionic compounds or decomposes in a solution is referred to as a strong electrolyte. In the solution, these ions act as effective conductors of electric current. A substance that is a good electrical conductor while in aqueous solution was the original definition of a "strong electrolyte."

An electrolytes that dissolves almost entirely in water is said to be a strong electrolyte. Hydrogen chloride is a good illustration of the a strong electrolyte (HCl). An electrolyte that just doesn't entirely dissolve in water is referred to as a weak electrolyte.

To know more about Strong Electrolyte visit:

https://brainly.com/question/29375659

#SPJ1

The value of the equilibrium constant is 6.25.

To calculate the equilibrium constant, we need to use the balanced chemical equation and the Law of Mass Action. The balanced chemical equation for the reaction is:

CO(g) + H2O(g) ⇌ CO2(g) + H2(g)

The Law of Mass Action expression for this reaction is:

Kc = [CO2][H2]/[CO][H2O]

where Kc is the equilibrium constant, and the square brackets denote molar concentrations.

From the given information, we know that:

[CO] = 1.60 moles/8.00 L = 0.20 M
[H2O] = 1.60 moles/8.00 L = 0.20 M
[CO2] = 4.00 moles/8.00 L = 0.50 M
[H2] = 4.00 moles/8.00 L = 0.50 M

Substituting these values into the Law of Mass Action expression gives:

Kc = (0.50)(0.50)/(0.20)(0.20) = 6.25

Therefore, the value of the equilibrium constant is 6.25.

To know more about  equilibrium constant click on below link :

https://brainly.com/question/31321186

#SPJ11

33 grams of CO₂ will be produced from 12.0 g of CH₄ and 133 g of O₂ using the concept of moles.

The mole is an amount unit similar to familiar units like pair, dozen, gross, etc. It provides a specific measure of the number of atoms or molecules in a bulk sample of matter.

A mole is defined as the amount of substance containing the same number of atoms, molecules, ions, etc. as the number of atoms in a sample of pure 12C weighing exactly 12 g.

Given,

Mass of methane = 12g

Mass of oxygen = 133g

Moles of methane = mass / molar mass

= 12 / 16 = 0.75 moles

Moles of oxygen = mass / molar mass

= 133 / 32 = 4.156 moles

Since moles of methane are lesser, it is the limiting reagent.

1 mole of methane gives 1 mole of carbon dioxide

Moles of carbon dioxide = 0.75 moles

mass of carbon dioxide = 0.75 × 44

= 33g

Learn more about Moles, here:

https://brainly.com/question/31597231

#SPJ1

6KOH + CO₃(PO₄)₂ → 2K₃PO₄ + 3CO(OH)₂

It is a double displacement reaction.

Double displacement reaction- In aqueous solutions, where ions precipitate and exchange occurs, double displacement processes are most common. For instance, a white precipitate of barium sulphate quickly forms when a solution of barium chloride and sodium sulphate are combined. These are ionic-based reactions.

In double displacement reactions, there is simply an ion exchange between the two reactants and no oxidation or reduction of any of the reactants. Double displacement processes are therefore not redox processes.

The positive ions trade partners with the negative ions during double displacement processes. Ionic chemicals that are dissolved in water undergo several double displacement reactions with one another.

Thus it is a double displacement reaction.

To learn more about double displacement reaction refer- https://brainly.com/question/23918356

#SPJ9

Answer: \(1.6\times 10^4\)

Explanation:

Scientific notation is defined as the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example : 5000 is written as \(5.0\times 10^3\)

In division , the result would contain the same number of significant digits as there in the least precise number , thus the answer would have 2 significant digits.

\(\frac{1.248\times 10^{-2}}{7.8\times 10^{-7}}=1.6\times 10^4\)

Answer:

Too much iodine can be harmful if you don't need it. You don't need to take iodine (supplements) if you already have a varied and balanced diet.

Explanation:

Iodine is already contained in table salt so you don't need to add any more.

Using the change of base rule to find the logarithm to four decimal places. the correct answer is 11.4235.

To find the logarithm of 143.2 using the change of base rule, we can choose any base we prefer. Let's use base 10 and natural logarithm (base e) for this calculation.

First, we'll use the change of base formula, which states that log(base b) x = log(base c) x / log(base c) b. In this case, we'll calculate log(base 10) 143.2.

We'll use the natural logarithm (ln) as our intermediary step. The natural logarithm of 143.2 can be calculated as ln(143.2).

Using a calculator, we find that ln(143.2) is approximately 4.9628.

Next, we need to calculate log(base 10) e, which is the logarithm of e with base 10. Using a calculator, we find log(base 10) e is approximately 0.4343.

Finally, we apply the change of base formula:

log(base 10) 143.2 ≈ ln(143.2) / log(base 10) e
                ≈ 4.9628 / 0.4343
                ≈ 11.4235

Rounding to four decimal places, the logarithm of 143.2 using base 10 is approximately 11.4235.

Learn more about logarithm here :-

https://brainly.com/question/30226560

#SPJ11

The reaction is endothermic and absorbed N2 and O2 are reactants while NO is a product

An endothermic reaction is a chemical reaction that absorbs heat from the surroundings, resulting in an increase in the system's internal energy.

In other words, the energy of the products is greater than the energy of the reactants, and the reaction requires an input of heat to proceed. Endothermic reactions are characterized by a decrease in temperature of the surroundings.

Learn more about endothermic reaction:https://brainly.com/question/23184814

#SPJ1

The final temperature of the air undergoing the polytropic process with n = 1.2 is 215.1 K. The specific heat capacity of air is a function of temperature, pressure, and volume in the process.

What is a polytropic process?

A polytropic process is a thermodynamic method that occurs when a system undergoes a change in pressure and volume and its internal energy is transformed through work. The term "polytropic" refers to a procedure in which pressure is modified but temperature is constant.

Polytropic processes can be described by the following formula:

P Vn = C (polytropic process formula)

The polytropic process's exponent "n" is frequently used to signify the nature of the compression. It can also indicate the procedure's efficiency. It is used to distinguish the nature of heat transfer from one substance to another in a closed system. Furthermore, the polytropic exponent is utilized to evaluate heat pumps, gas compressors and expanders, and combustion engines.

What is the formula for the final temperature of air?

The formula for calculating the final temperature of air undergoing a polytropic process with n = 1.2 is given byT2 = T1 * (p2/p1)^[(n-1)/n]

Here,

PA Initial temperature of the air, T1 = 400 °C

Final pressure of the air, p2 = 110 kPa = 0.11 MPa

Polytropic process exponent, n = 1.2

Using the above values in the formula,T2 = 400 + 273.15 * [(0.11/1)^[(1.2-1)/1.2]]T2 = 215.1 K

Therefore, the final temperature of the air undergoing the polytropic process with n = 1.2 is 215.1 K.

To know more about the polytropic process https://brainly.com/question/13001350

#SPJ11

Answer:

The work done by the gas expansion is 5875 J,

Since the work done is positive, the work is done by the gas on the surroundings.

Explanation:

Given;

change in internal energy, ΔU = -4750 J

heat transferred to the system, Q = 1125 J

The change in internal energy is given by;

ΔU = Q - W

Where;

W is the work done by the system

The work done by the system is calculated as;

W = Q - ΔU

W =  1125 - (-4750)

W = 1125 + 4750

W = 5875 J

Since the work done is positive, the work is done by the gas on the surroundings (energy flows from the gas to the surroundings).

Therefore, the work done by the gas expansion is 5875 J

Answer:

Newton's law of universal gravitation. Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.

Explanation:

That's the definition hope it helps.

Please find attached photograph for your answer

The value of the water of crystallization (x) is 0.027.

To determine the value of x, we need to calculate the mass of water lost during the heating process. We know that the mass of the anhydrous salt is 1.51 g, which means that the mass of water lost is:

Mass of water lost = Mass of hydrate - Mass of anhydrous salt

⇒                  = 2.00 g - 1.51 g

⇒                  = 0.49 g

The mass of water lost corresponds to the mass of water molecules that were part of the hydrate, so we can use it to calculate the value of x:

Mass of water lost = x × molar mass of water

⇒         0.49 g = x × 18.015 g/mol

Solving for x gives:

⇒           x = 0.49 g / 18.015 g/mol

⇒            x = 0.0272 mol

Since the formula of the hydrate is CaCl2•xH2O, the value of x corresponds to the number of moles of water molecules in one mole of the hydrate. Therefore, we can express x as a ratio of moles of water to moles of anhydrous salt:

⇒          x = moles of water / moles of CaCl2

The molar mass of CaCl2 is 110.98 g/mol, and we know that the mass of the anhydrous salt is 1.51 g. Therefore, the number of moles of CaCl2 in the sample is:

moles of CaCl2 = 1.51 g / 110.98 g/mol

moles of CaCl2 = 0.0136 mol

Substituting this value and the value of x into the equation above gives:

0.0272 mol = moles of water / 0.0136 mol

Solving for moles of water gives:

moles of water = 0.0272 mol × 0.0136 mol

moles of water = 0.00037 mol

The value of x is the ratio of moles of water to moles of CaCl2:

⇒               x = moles of water / moles of CaCl2

⇒               x = 0.00037 mol / 0.0136 mol

⇒               x = 0.027

Therefore, the value of x is 0.027, to one significant figure.

To know more about the Hydrate, here

https://brainly.com/question/27987763

#SPJ4

This question is asking for the pH of a buffer solution between ammonia and nitric acid, with given volumes and concentrations. At the end, the result turns out to be 10.488.

In chemistry, buffers are known as substances attempting to hold a relatively constant pH by mixing and acid and a base (weak and strong). In such a way, for the substances given, the first step will be to calculate the consumed moles as they are mixed:

\(n_{NH_3}=0.1L*0.1mol/L=0.01mol\\\\n_{HNO_3}=0.09L*0.1mol/L=0.009mol\)

Now, since ammonia is in a greater proportion, one can calculate how much of it is left after being consumed by the nitric acid:

\(n_{NH_3}^{left}=0.01mol-0.009mol=0.001mol\)

And its new concentration:

\([NH_3]=\frac{0.001mol}{0.1L+0.09L} =0.00526M\)

Next, with ammonia's ionization:

\(NH_3+H_2O\rightleftharpoons NH_4^++OH^-\)

We set up the equilibrium expression based on ammonia's Kb:

\(Kb=\frac{[NH_4^+][OH^-]}{[NH_3]}\)

Which can be solved by introducing x and using ammonia's Kb:

\(1.8x10^{-5}=\frac{x^2}{0.00526M}\\ \\\)

Then, we solve for x which is also equal to the concentration of ammonium and hydroxide ions in the solution:

\(x=\sqrt{0.00526*1.8x10^{-5}}=0.000308M\)

Ultimately, we calculate the pOH and then turn it into pH with:

\(pOH=-log(0.00308)=3.512\\\\pH=14-3.512=10.488\)

Learn more about buffers: https://brainly.com/question/24188850