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3 years ago

If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law?

Chemistry

2 answers:

Mariana [72]3 years ago

8 0

Pv = nrt

r is constant, only variable unaccounted for is n which is mole gas.

So.it's the first one, molar amount gas

myrzilka [38]3 years ago

5 0

Answer : The correct option is, the molar amount of the gas.

Explanation :

Ideal gas law : In this law, the pressure, temperature, volume and moles of gas are related to each other by the simple formula.

The ideal gas equation is,

$PV=nRT$

where,

P = pressure of the gas

V = volume of the gas

T = temperature of the gas

n = number of moles of gas or molar amount of gas

R = Gas constant

According to the question, If the pressure, volume, and temperature of a gas are known then the molar amount of the gas can be found by using the ideal gas law.

Hence, the correct option is, the molar amount of the gas.

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Given the reaction at equilibrium:

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B IT IS B … thank me later.

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3 years ago

Calcium carbonate decomposes to form calcium oxide and carbon dioxide, like this:

Leni [432]

Answer: The value of the equilibrium constant Kc for this reaction is 0.088

Explanation:

$Molarity=\frac{x}{M\times V_s}$

where,

x = given mass

M = molar mass

$V_s$ = volume of solution in L

Equilibrium concentration of $CaCO_3$ = $\frac{25.3}{100\times 9.0}=0.028M$

Equilibrium concentration of $CaO$ = $\frac{14.9}{56\times 9.0}=0.029M$

Equilibrium concentration of $CO_2$ = $\frac{33.7}{44\times 9.0}=0.085M$

The given balanced equilibrium reaction is,

$CaCO_3(s)\rightleftharpoons CaO(s)+CO_2(g)$

The expression for equilibrium constant for this reaction will be,

$K_c=\frac{[CaO]\times [CO_2]}{[CaCO_3]}$

Now put all the given values in this expression, we get :

$K_c=\frac{0.029\times 0.085}{0.028}=0.088$

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3 years ago

Complete the equation for the dissociation of Fe(ClO4)3(aq). Omit water from the equations because it is understood to be presen

victus00 [196]

Answer:

The equation that tends to answer this question, (omitting the presence of water) is:

Fe (ClO4) 3 -----------> Fe (+3) + ClO4 (-1)

Explanation:

The numbers that we see in parentheses would be the oxidation numbers of each compound, in the case of iron, iron acts with an oxidation number of +3, and in the case of perchlorate it would be -1.

The stoichiometric name according to IUPAC (most widely used chemical nomenclature) is iron perchlorate.

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3 years ago

72.0 grams of water how many miles of sodium with react with it?

Flura [38]

Answer:

$\large \boxed{\text{8.00 mol}}$

Explanation:

We will need a balanced chemical equation with masses, moles, and molar masses.

1. Gather all the information in one place:

Mᵣ: 18.02

2Na + H₂O ⟶ 2NaOH + H₂

m/g: 72.0

2. Moles of H₂O

$\text{Moles of H$_{2}$O} = \text{72.0 g H$_{2}$O} \times \dfrac{\text{1 mol H$_{2}$O}}{\text{18.02 g H$_{2}$O}} = \text{3.996 mol H$_{2}$O}$

3. Moles of Na

The molar ratio is 2 mol Na/1 mol H₂O.

$\text{Moles of Na} = \text{3.996 mol H$_{2}$O} \times \dfrac{\text{2 mol Na}}{\text{1 mol H$_{2}$O}} = \textbf{8.00 mol Na}\\\\\text{The water will react with $\large \boxed{\textbf{ 8.00 mol}}$ of Na}$

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