ALEKS Ammonia will decompose into nitrogen and hydrogen at high temperature. An industrial chemist studying this reaction fills a 5.0L flask with 2.7 atm of ammonia gas, and when the mixture has come to equilibrium measures the amount of nitrogen gas to be 0.54 atm.

Required:
Calculate the pressure equilibrium constant for the decomposition of ammonia at the final temperature of the mixture.

Answer: 8.979

Explanation:

Answer:d

Explanation:

Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

The electrode potential value is 59mV

Temperature=298k

What is electrode potential?

equation formed- Zn → Zn2+ + 2e

              from Nernst equation-

E=E cell - 0.059 log [Zn2+]

[zn2+]=3.481 mol/lit

hence, Molar concentration of Zn2+ions in a solution is 3.481 mol/lit

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When a potent acid, like hydrochloric acid, HCl, is combined with a potent base, such sodium hydroxide, NaOH, the result can be complete neutralization. Strong bases and acids dissociate entirely into their individual ions when they dissolve in water.

An element's valency is its capacity for combination. The periodic table groups have identical elements with the same valency.. How many electrons make up the outer shell of an element determines its valency. The group number.

Valency is simply the amount of electrons that an element's atom gains, loses, or shares to obtain the closest configuration to that of a noble gas. The valency of sodium (Na), magnesium (Mg), chlorine (Cl), and other elements, for instance, is 1.

When there are equal moles of strong acid and strong base, the strong acid and strong base completely neutralize one another. An aqueous solution with a pH of 7 is the end product.

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Answer: It's the a12o3

Explanation: It is because I know it...

Answer:

6.022 x 10²³ electrons

Explanation:

The machine exerts a force of 9 newtons on the baseball to accelerate it from 0 m/s to 30 m/s in 0.5 seconds.

To calculate the force exerted by the machine on the baseball, we can use Newton's second law of motion, which states that force (F) is equal to the product of mass (m) and acceleration (a).

In this case, the acceleration can be determined using the formula a = (v - u) / t, where v is the final velocity, u is the initial velocity, and t is the time taken for the acceleration.

Given:

Mass of the baseball (m) = 0.15 kg

Initial velocity (u) = 0 m/s (as the baseball starts from rest)

Final velocity (v) = 30 m/s

Time (t) = 0.5 s

First, let's calculate the acceleration:

a = (v - u) / t

a = (30 m/s - 0 m/s) / 0.5 s

a = 60 m/s^2

Now, we can use the calculated acceleration and the given mass to determine the force:

F = m * a

F = 0.15 kg * 60 m/s^2

F = 9 N

The machine exerts a force of 9 newtons on the baseball. This force is calculated using Newton's second law of motion, which states that force is equal to mass multiplied by acceleration.

By determining the acceleration of the baseball using the formula a = (v - u) / t and substituting the given values, we find that the acceleration is 60 m/s^2. Multiplying the mass of the baseball (0.15 kg) by the acceleration gives the force exerted by the machine as 9 newtons.

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Answer:

7.57 *10^1 g

Explanation:

10.9 mol Li *6.941 g/1 mol = 75.6569 > 7.57 *10^1 g

Answer:

42.39, 64.06

Explanation:

Formula Weight can be calculated by adding the atomic mass of the elements in the formula.

LiCl

AM for Li is 6.94 amu, AM for Cl is 35.45 amu

\((6.94)+(35.45)=42.39\)

SO₂

AM for S is 32.06 amu, AM for O is 16 amu

\((32.06)+2(16.00)=64.06\)

Answer:

A. Radar would be the best tool for measuring distances to objects in the solar system.

B. A parallax measurement would be best for this nearby star.

C. Cepheids or RR Lyraes would be useful for determining the distance to this cluster.

D. The method using the H-R diagram and getting a spectrum to determine the luminosity class of the star.

Answer:

they are molecules with normal bonds rather than partial bonds and can occasionally be isolated.

Explanation:

In chemistry, reaction intermediates are species that are formed from reactants and are subsequently being transformed into products as the reaction progresses. In other words,  reaction intermediates are species that do not appear in a balanced reaction equation but occur somewhere along the reaction mechanism of a non-elementary reaction. They are usually short lived species that possess a high amount of energy. They may or may not be isolated.

They are often molecular species with normal bonds unlike activated complexes that are sometimes hypervalent species.

The element that has the same number of valence electrons as phosphorus and the same number of electron shells as iodine is Antimony,  Sb.

Valence electrons are the electrons that are found in the outermost shell of an atom of an element.

The number of valence electrons in an atom determines the group to which the elements belong.

Electron shells are the shells in an atom to which an electron is fed into the atom. An electron shell determines the period an element belongs to.

Phosphorus has 5 valence electrons, hence belongs to group 5A or 15.

Iodine has 5 electron shells, hence belongs to period 5.

The element that belongs to group 5A period 5 is antimony.

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Answer:

1.6

Explanation:

velocity=distance/time

=8/5

Answer: c (the amount of empty space between the water particles will decrease)

Explanation: i got it right:)

Answer:

\(\Delta _{neutralization}H=-73\frac{J}{mmol}\)

Explanation:

Hello there!

In this case, by considering this calorimetry problem, it is possible to realize that the heat released by the reaction between HCl and NaOH is absorbed by the reaction mixture, which can be assumed to have the same density and specific heat of pure water; thus, we calculate this heat as a function of the specified temperature change:

\(Q_{rxn}=-Q_{solution}\\\\Q_{rxn}=-m_{solution}C_{solution}(T_2-T_1)\)

Thus, we plug in the data, by also considering that the total volume of solution is 19mL+19mL=38mL:

\(Q_{rxn}=-(38mL*\frac{1g}{1mL} )(4.184\frac{J}{g\°C}) (37.3\°C-28.6\°C)\\\\Q_{rxn}=-1383.2J\)

Next, since the reaction between NaOH and HCl is:

\(NaOH+HCl\rightarrow NaCl+H_2O\)

Whereas there is 1:1 mole ratio of NaOH to HCl, we infer they both react with the same moles, defined by the volume and molarity:

\(n_{rxn}=0.019L*1mol/L\\\\n_{rxn}=0.019mol\)

Finally, to compute the enthalpy of neutralization we divide the total heat due to the reaction by the reaction moles to obtain:

\(\Delta _{neutralization}H=\frac{Q_{rxn}}{n_{rxn}=}\\\\ \Delta _{neutralization}H=\frac{-1383.23J}{0.019mol}\\\\\Delta _{neutralization}H=-72801.6\frac{J}{mol}*\frac{1mol}{1000mmol}\\\\\Delta _{neutralization}H=-73\frac{J}{mmol}\)

Best regards!

Answer:

To calculate the heat released in this reaction, we need to use the formula:

Q = mcΔT

where Q is the heat released, m is the mass of the solution, c is the specific heat capacity of the solution, and ΔT is the change in temperature.

Assuming the density of the solution is 1 g/mL, the mass of the solution is 100 g (50 mL HCl + 50 mL NaOH). The specific heat capacity of the solution can be assumed to be the same as that of water, which is 4.18 J/g°C.

The change in temperature can be calculated as the final temperature minus the initial temperature:

ΔT = 30°C - 22°C = 8°C

Therefore, we have:

Q = (100 g) * (4.18 J/g°C) * (8°C) = 3344 J

The heat released in the reaction is 3344 J.

The value of ΔH for the reaction can be calculated using the formula:

ΔH = -Q/n

where Q is the heat released, and n is the number of moles of limiting reactant used in the reaction. In this case, the limiting reactant is NaOH, and we can calculate the number of moles of NaOH from its concentration and volume:

n(NaOH) = (0.1 L) * (1 mol/L) = 0.1 mol

Therefore, we have:

ΔH = -(3344 J) / (0.1 mol) = -33,440 J/mol

The value of ΔH for the reaction is -33,440 J/mol, which is negative because the reaction is exothermic (heat is released).

Answer:

One mole of ideal gas occupies 22.4L volume at STP

Explanation:

So., we treat carbon dioxide an ideal gas:

3 mol x 22.4L •Mol-¹ ≈? ?L

The mass of lithium metal that is used in lithium batteries is 6.17 grams,  this can be calculated by using number of moles formula.

It is defined as the ratio between mass and molar mass.

It is given by:

Number of moles = mass / Molar mass

What information do we have?

Number of moles= 0.89 moles

Molar mass of Lithium metal= 6.941 g/mol

To find:

Mass of Lithium metal=?

On substituting the values

n= m/M

0.89 = m/ 6.941

m= 0.89*6.941

m= 6.177 grams

Thus, the mass of lithium metal is 6.177 grams.

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The partial pressure of nitrogen gas is 0.95 atm and the new volume of the gas at STP would be 24.8 mL.

a. To find the partial pressure of nitrogen gas, we need to subtract the vapor pressure of water from the total pressure. As per Dalton's law, the total pressure is the sum of all the partial pressures of the gases. So, we have,

Partial pressure of nitrogen gas = Total pressure - Vapor pressure of water

Partial pressure of nitrogen gas = 0.98 atm - 0.03 atm

Partial pressure of nitrogen gas = 0.95 atm

Therefore, the partial pressure of nitrogen gas is 0.95 atm.

b. To find the new volume of the gas at STP, we can use the combined gas law, which relates the pressure, volume, and temperature of a gas. The combined gas law is given by,

(P₁V₁)/T₁ = (P₂V₂)/T₂,  initial pressure is P₁, volume is V₁, temperature is T₁, final pressure is P₂, volume is V₂, and temperature is T₂. At STP, the pressure is 1 atm and the temperature is 273 K. Solving for V₂, we get,

V₂ = (0.95 atm * 30.0 mL * 273 K) / (297 K * 1 atm)

V₂ = 24.8 mL (rounded to two significant figures)

Therefore, the new volume of the gas at STP would be 24.8 mL.

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True, according to Le Châtelier's principle, an increase in temperature will shift the equilibrium position toward the products in an endothermic reaction.

Le Châtelier's principle states that changes in the temperature, pressure, volume, or concentration of a system will result in a noticeable and opposing changes in the system in order to achieve a new equilibrium state.

According to Le Châtelier's principle;

Thus, the According to Le Châtelier's principle, an increase in temperature will shift the equilibrium position toward the products in an endothermic reaction.

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Answer:

To get a boy to like you you have to 1.dress up cutely  

2.talk to him ask him what he likes

3. wear a little bit of make-up not to much

4. wear you hair down and have a little bit of hair on your chest

5. Be really confident and don't wait till a really longg time and mess up like i did.

Explanation:

Answer:

Put your hair down. Also, dont use too much makeup. Just wear mascara and lipgloss. Be kind. Be confident.

Explanation:

If u wear to much makeup he will think ur a try-hard. Stop trying to be cool, it's just dumb. If ur rude, then hes gonna think that u dont like him.

At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

1: Write the balanced chemical equation:

\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)

2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.

Initial:

\(C_O\)(g) = 0.3500 mol

\(Cl_2\)(g) = 0.05500 mol

\(C_OCl_2\)(g) = 0 mol

Change:

\(C_O\)(g) = -x

\(Cl_2\)(g) = -x

\(C_OCl_2\)(g) = +x

Equilibrium:

\(C_O\)(g) = 0.3500 - x mol

\(Cl_2\)(g) = 0.05500 - x mol

\(C_OCl_2\)(g) = x mol

3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:

Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]

4: Substitute the given equilibrium constant (Kc) value into the expression:

1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)

5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:

1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x

6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.

7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.

8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):

\(Cl_2\)(g) = 0.05500 - x

9: Calculate the value of \(Cl_2\)(g) at equilibrium:

\(Cl_2\)(g) = 0.05500 - x

\(Cl_2\)(g) = 0.05500 - (positive value of x)

10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.

Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.

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Some types of solids that are insoluble in water are:

Many solids are insoluble in water, meaning they do not dissolve in water to a significant extent. Here are some examples of common solids that are generally insoluble in water:

Metals: Most metals, such as gold, silver, platinum, and copper, are insoluble in water.

Non-Metallic Elements: Many non-metallic elements, such as carbon (in the form of graphite or diamond), sulfur, phosphorus, and iodine, are insoluble in water.

Metal Oxides: Some metal oxides, particularly those of less reactive metals, are insoluble in water. Examples include aluminum oxide (Al2O3), iron(III) oxide (Fe2O3), and lead(II) oxide (PbO).

Metal Carbonates: Most metal carbonates are insoluble in water. Examples include calcium carbonate (CaCO3), lead(II) carbonate (PbCO3), and copper(II) carbonate (CuCO3).

Metal Sulfides: Many metal sulfides are insoluble in water. Examples include lead(II) sulfide (PbS), silver sulfide (Ag2S), and mercury(II) sulfide (HgS).

Insoluble Salts: Certain salts have limited solubility in water. Examples include silver chloride (AgCl), lead(II) iodide (PbI2), and calcium sulfate (CaSO4).

It's important to note that while these solids are generally insoluble in water, they may exhibit some solubility to a small extent. The solubility of a solid in water can vary depending on factors such as temperature, pressure, and the presence of other solutes.

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Explanation:

the most important observations is the conversion of electrical energy into light energy which performs the function of a lamp

in addition to this there is considerable amount of energy loss in form of heat energy when the electrical lamp is there is production of a result of this is not converted into light energy

Given that,

we are to find

we know that,

and

According  to the molecular geometry, there are 3  maximum number of σ bonds that the atom can form and 2 maximum number of p-p bonds that the atom can form .

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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Answer:

awdaef

Explanation: