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Hetan Krishna
Asked: 2022-11-01T16:53:22+05:30 In:

`A` cylinder of fixed capacity `67.2` liters contains helium gas at `STP` . Calculate the amount of heat required to rise the temperature of the gas by `15^(@)C` ? `(R=8.314 J mol^(-1)k^(-1))`
A. `561.19 J`
B. `570.9 J`
C. `580.9 J`
D. `590.9 J`

`A` cylinder of fixed capacity `67.2` liters contains helium gas at `STP` . Calculate the amount of heat required to rise the temperature of the gas by `15^(@)C` ? `(R=8.314 J mol^(-1)k^(-1))`
A. `561.19 J`
B. `570.9 J`
C. `580.9 J`
D. `590.9 J`
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1 Answer

  1. Correct Answer – A
    We know that `1` mole of an ideal gas at `STP` occupies a volume of `22.4` litres. Thus the cylinder contains `3` moles of helium.
    Heat required `=nC_(v)DeltaT=3xx(3)/(2)RDeltaT`

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