Calculate the density of carbon dioxide by hydrogen and by air.

To solve the problem, it is necessary to know the mass of carbon dioxide, but since it is not in the problem statement, we introduce the variable “X”.
Let’s find the relative density of carbon dioxide by hydrogen:
Ro = m: Mr (H) = x g / mol: 2 g / mol = 22x
To find the relative density of carbon dioxide in air, you need to know its molar mass (29) and the mass of the mixture.
44 g / mol: 29 g / mol = 1.517x
Answers: 22x; 1.517x.