PhysicsNEET 2020Ideal gas equation and kinetic interpretation of pressure

Kinetic Theory

A cylinder contains hydrogen gas at a pressure of 249 kPa and temperature 27 °C. Its density is: ( $R = 8.3 J mo l^{- 1} K^{- 1}$ )

A. $0.5 kg/ m^{3}$
B. $0.2 kg/ m^{3}$ ✓
C. $0.1 kg/ m^{3}$
D. $0.02 kg/ m^{3}$

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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