5. Density of a gas is found to be 4.5g/dm3 at 270C and 3bar pressure. What will be its density at STP?
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Answer:
Density is 4.05g/dm^3
Explanation:
P*V=n*R*T
P1*V1/n1*R*T1=P2*V2/n2*R*T2
V=M/D
P1*M1/D1*n1*R*T1=P2*M2/D2*n2*R*T2
'R' is constant
'n' is constant
'M' is constant
P1/D1*T1=P2/D2*T2
Substituting:
3/4.5*270=3/D2*300
D2*300=4.5*270
D2=4.5*270/300
D2=4.05
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