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Question

A vessel has x g of gas at high pressure P. When certain gas escapes, the pressure P became P/8 and temperature T became 2T. What is the amount of gas escaped?

A
23m
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B
13m
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C
1516m
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D
34m
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Solution

The correct option is C 1516m
x g of gas=xM mole of gas (n).
As the volume is constant PnT
Pressure=P1=P and P2=P8
Temperature=T1=T and T2=2T
Now, P1T1n1=P2T2n2PxM×T=P8n2×2Tn2=xM16
(1116)xg=15x16g of the gas escaped.

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