Air has an average molar mass of 29.0 g/mol. What is the density of air at 1.05 atm and 17.4C ?

A cylinder contains 60.6 g of neon (Ne) gas. Another cylinder (twice the volume of the neon cylinder and at the same temperature/pressure), contains hydrogen (H2) gas. 

Assuming both are ideal gases, what is the mass of the hydrogen gas (in g)? Express your answer to three significant figures.