Question

How many moles of a gas sample are in a 5.0 L container at 373 K and 203 kPa?

0.33 mole

0.66 mole

1.11 moles

3.05 moles

Answer 1

0.33 mole

Step-by-step explanation:

Answer 2

0.33 moles.

Step-by-step explanation:

Assuming the gas is ideal, we can solve this problem by using the following formula:

• PV = nRT

Where:

• P = 203 kPa

• V = 5.0 L

• n = ?

• R = 8.314 kPa·L·mol⁻¹·K⁻¹

• T = 373 K

We input the data:

• 203 kPa * 5.0 L = n * 8.314 kPa·L·mol⁻¹·K⁻¹ * 373 K

• n = 0.327 mol

The answer is thus the first option, 0.33 moles.