Q.

A cylinder contains hydrogen gas at pressure of 249 kPa and temperature 27OC.   Its density is : (R=8.3Jmol-1K-1)

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a

0.2 kg/m3

b

0.1 kg/m3

c

0.02 kg/m3

d

0.5 kg/m3

answer is A.

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Detailed Solution

PV=nRTd=PMRT=249×103×2×10−38.3×300Kg/m3d=0.2Kg/m3
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