How many moles of a gas sample are in a 20.0 L container at 373 K and 203 kPa? The gas constant is 8.31 L-kPa/mol-K. A) 0.33 mole B) 0.65 mole C) 1.30 moles D) 3.05 moles

Question

Chemistry

Angeline Mcfarland

28 April, 03:11

How many moles of a gas sample are in a 20.0 L container at 373 K and 203 kPa? The gas constant is 8.31 L-kPa/mol-K. A) 0.33 mole B) 0.65 mole C) 1.30 moles D) 3.05 moles

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Answers (1)

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Isabel Harmon · Answer 1

Option (C) 1.30 moles

Explanation:

The following data were obtained from the question:

Volume (V) = 20L

Temperature (T) = 373K

Pressure (P) = 203 kPa

Gas constant (R) = 8.31 L. kPa/mol. K.

Number of mole (n) = ... ?

The number of mole of the gas in the container can obtained by applying the ideal gas equation as illustrated below:

PV = nRT

Divide both side by RT

n = PV / RT

n = 203 x 20 / 8.31 x 373

n = 1.30 mole.

Therefore, 1.30 mole of the gas is present in the container.