Question

What is the density (in g/L) of hydrogen gas at 21 °C and a pressure of 1670 psi?

Express your answer in grams per liter to three significant figures.

Answer 1

Answer:

$d=9.5g/L$

Explanation:

Hello there!

In this case, according to the given information, it i possible for us to calculate the density of this gas via the ideal gas equation, according to the following setup:

$PV=nRT\\\\P=\frac{mRT}{V*MM} \\\\\frac{m}{V}=d=\frac{P*MM}{RT}$

Thus, we plug in the variables (pressure in atm and temperature in K) to obtain:

$d=\frac{113.6368atm*2.02g/mol}{0.08206\frac{atm*L}{mol*K}*(21+273)K} \\\\d=9.5g/L$

Regards!