What volume would the propane occupy at STP?

Question

An aerosol spray can with a volume of 250mL contains 2.30g of propane gas (C3H8) as a propellant.

Answer 1

1 mole of any gas at STP will occupy 22.4 liters.  The volume of the aerosol spray can is not relevant if the question asks for the volume occupied by 2.30 g propane gas.

2.30 g C3H8 x 1 mole C3H8/44.1 g = 0.0227 moles C3H8

0.0227 moles C3H8 x 22.4 L/mole = 0.508 liters of C3H8 (to 3 significant figures)