Q. 95.0( 1 Vote )
The density of an
Answer :
We know ideal gas equation
PV=nRT
Where V= volume of gas
R=gas constant
T=temperature
n=number of moles of gas
P=pressure of gas
STP means standard temperature-273.15K and pressure 101.325 kPa.
Given:
T=273.15K
P=101.325
Pa
Density of ideal gas 
1.25 × 10–3 g cm–3
1gcm-3=103kgm3
kgm3
Number of moles n =
=
Density 
From ideal gas equation, we can write
Molecular weight of gas is 2.38
10-2gmol-1
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