Question

A gas at 25 °C fills a container whose volume is 1.05 x 10³ cm³. The container plus gas has a mass of 837.6 g. The container, when emptied of all gas, has a mass of 836.2 g. What is the density of the gas at 25 °C? 

Answer 1

Volume of Container = 1.05 * 10³ cm³

Mass of empty Container = 836.2 g

Mass of container when gas is filled = 837.6 g

So, mass of gas = 837.6 - 836.2 = 1.4 g

Volume of gas = Volume of container = 1.05 * 10³ cm³

Therefore, density of gas = Mass of gas / Volume of gas

Density = 1.4/1.05 * 10³ = 1.3 * 10^-3 g/cm³ = 0.0013 g/cm³

Hence, the density of gas is 0.0013 g/cm³.