Question

Calculate the volume occupied by 0.01 moles of helium gas at STP.

Answer 1

Hint: One gram mole of a gas at STP occupies 22.4 liters of volume.

Step 1: At STP 1 mole of a gaseous substance occupies 22.4 liters (22.4 l = gram molar volume)

Step 2: Volume occupied = GMV × 0.01
Hence, the volume occupied $22.4\times 0.01=0.224\mathrm{litrs}$

Final Answer: The volume occupied by 0.01 moles of helium gas at STP is 0.224 liters