Determine the relative molecular weight of the gas if it is known that 1 liter of this gas has 1.96 grams under normal conditions.

We have a volume of 1L
Weight – 1.96g
We need to find M (relative molecular weight)
First, we will find the amount of the substance. We will use the formula: n = V / Vm
Where V is the volume, and Vm is the painting volume (for all gases it is 22.4 l / mol)
And n is the amount of substance
n = 1: 22.4 = 0.04
And now we will find M by the formula M = m / n
M = 1.96: 0.04 = 49
Answer: M = 49