A cylinder contains hydrogen gas at pressure of 249 kPa and temperature $27^{\circ} \mathrm{C}$. Its

Question

A cylinder contains hydrogen gas at pressure of 249 kPa and temperature $27^{\circ} \mathrm{C}$. Its density is $\left(R=83 \mathrm{Jmol}^{-1} \mathrm{~K}^{-1}\right)$

Professor PC Thomas Classes · Answer

Density $\rho = PM / RT$.