Question

What is the molar mass of a gas, if 2.5 g of the gas occupies 1.12 L at STP?

• A. 50 g/mol
• B. 22.4 g/mol
• C. 44 g/mol
• D. 28 g/mol

Hint:

For gases at STP, 1 mole of any ideal gas occupies 22.4 L. Always check the volume and mass units.