A 30.0 g gas sample occupies 11.2 L at STP. Find the molecular weight of this gas.

Asked by Topperlearning User | 20th Apr, 2015, 11:32: AM

Expert Answer:

One mole of a gas occupies a volume of 22.4 L at STP. This is a standard fact.

11.2 L at STP is one-half molar volume; therefore there is 0.5 mol of gas present.

Thus, the molecular weight of the gas is 80.0 g mol-1.

 

Answered by  | 20th Apr, 2015, 01:32: PM