Question

3
A cylinder contains hydrogen gas at pressure of
249 kPa and temperature 27°C.
Its density is : (R = 8.3J mol-1 K-1)
(1) 0.5 kg/m3
(2) 0.2 kg/m3
(3) 0.1 kg/m3
(4) 0.02 kg/m3​

Answer 1

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Answer 2

Answer:

0.2kg/m³

Explanation:

PV=RT

Density=M/V

V=RT/P

Density =MP/RT

=2×10^-3×249×10³

------------------------

8.3×(273+27)

=498/2490

=1/5=0.2kg/m³