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7nadin3 [17]
2 years ago
15

A 8.5-liter sample of a gas at 2.0 atm and 300.0 K has 1.2 moles of the gas. If 0.65 mole of the gas is added to the sample at t

he same temperature and pressure, what is the final volume of the gas?
13 liters
14 liters
18 liters
21 liters
Chemistry
2 answers:
hodyreva [135]2 years ago
7 0

Did you take the test? what was the answer Im stuck on this one too

choli [55]2 years ago
3 0

Answer: 13 liters

Explanation:

Avogadro's Law: This law states that volume is directly proportional to the number of moles of the gas at constant pressure and temperature.

V\propto n   (At constant temperature and pressure)

\frac{V_1}{n_1}=\frac{V_2}{n_2}

where,

V_1 = initial volume of gas = 8.5 L

V_2 = final volume of gas = ?

n_1 = initial moles of gas =  1.2 moles

n_2 = final moles of gas = 1.2 +0.65 = 1.85 moles

Now put all the given values in the above equation, we get the final pressure of gas.

\frac{8.5L}{1.2}=\frac{V_2}{1.85}

V_2=13L

Therefore, the final volume of the gas will be 13 Liters.

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