Question
A glass tube of volume 112 ml containing a gas is partially evacuated till the pressure in it drops to 3.8×10−5 torr at 00 C. The number of molecules of the gas remaining in the tube is
Answer: Option B
:
B
PV=nRT
n=PVRT=3.8×10−5×112×10−362.4×273
=0.02461×10−8mol
No. of molecules = 0.02461×10−8mol
=1.5×1014
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:
B
PV=nRT
n=PVRT=3.8×10−5×112×10−362.4×273
=0.02461×10−8mol
No. of molecules = 0.02461×10−8mol
=1.5×1014
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