Question

224 ml of a gas at NTP weight 0.64gm . calculate it's molecular mass​

Answer 1

Molar mass is the mass of 1 mole of the gas.

At STP, 1 mole of a gas occupies a volume of 22.4 L.

5.00 liters of the gas at STP have a mass of 12.5 grams.

22.4 liters of the gas at STP have a mass of 12.5×

5.00

22.4

=56.0 grams. This is the molar mass of the gas.