# What volume would a MASS of 3.60*g hydrogen gas occupy under standard conditions?

Well, you know that $1 \cdot m o l$ of $\text{Ideal gas}$ occupies $22.14 \cdot L$ at $\text{STP..........}$
Of course, you have $\frac{3.60 \cdot g}{2.02 \cdot g \cdot m o {l}^{-} 1} \cong 2 \cdot m o l$ of $\text{dihydrogen gas}$. This molar quantity would occupy $44.2 \cdot L$ under the given conditions, in that dihydrogen APPROXIMATES the behaviour of an ideal gas. Can you provide a better estimate?