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The volume of a gas changes from 20 l to...

The volume of a gas changes from 20 l to 10 l under a pressure of `10^(60) dyn cdot cm^(-2)`. What will be the heat evolved?

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Work done on the gas,
`W = p(V_(2) - V_(1)) = 10^(6) (20 -10) xx 10^(3)`
`= 10^(10) erg = 10^(3) J`
`:. "Heat evolved", Q = W/J = (10^3)/(4.2)`
`= 238.1 cal`.
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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-CBSE SCANNER
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