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QNEET-2020-Ph-740: NEET 2020 Physics - Class 11 NEET-2020-Ph-740 Solution: A cylinder contains hydrogen gas at pressure 249 kPa and…
A cylinder contains hydrogen gas at pressure 249 kPa and temperature . Its density is: (R = 8.3 J ) 0.2 0.1 0.02 0.5
Multiple Choice Options
- A 0.2 kg/m 3
- B 0.1 kg/m 3
- C 0.02 kg/m 3
- D 0.5 kg/m 3
Step-by-Step Verified Solution
From the ideal gas equation, PV = nRT also
Volume (V) = m a s s ( M ) d e n s i t y ( _ )
So, PM = _ RT
P = 249 _ 10 3 N/m 2
M = 2 _ 10 -3 kg
T = 333 K
_ = ( 249 _ 10 3 ) ( 2 _ 10 _ 3 ) 8.3 _ 300
= 0.2 kg/m 3