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Question

A certain mass of a gas occupies a volume of 600 ml at a certain temperature and pressure. If pressure is decreased by 40% what will be the volume occupied by the same mass of the gas at the same temperature?

A
240 ml
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B
1000 ml
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C
300 ml
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D
120 ml
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Solution

The correct option is B 1000 ml
Initial volume V1=600ml

Let initial pressure be P1=x

Finial pressure P2=60x100

Finial volume =V2

At constant temperature,

As per boyle's law P1V1=P2V2V2=P1V1P2

V2=x×600×10060x

V2=1000ml

Hence, the correct answer is option B.

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