A cylinder contains hydrogen gas at pressure 249 kPa and temperature 27$^\circ $CIts density is : (R = 8.3 J mol-1 K-1)

Question

A cylinder contains hydrogen gas at pressure 249 kPa and temperature 27$^\circ $C
Its density is : (R = 8.3 J mol^-1 K^-1)

0.2 kg/m³