A sample of `0.1 g` of water of `100^(@)C` and normal pressure `(1.013 xx 10^(5) N m^(-2))` requires 54 cal of heat energy to convert to steam at `100^(@)C`. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample isA. 42.2 JB. 208.7 JC. 104.3 JD. 84.5 J

A sample of `0.1 g` of water of `100^(@)C` and normal pressure `(1.013

1.	A sample of `0.1 g` of water of `100^(@)C` and normal pressure `(1.013 xx 10^(5) N m^(-2))` requires 54 cal of heat energy to convert to steam at `100^(@)C`. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample isA. 42.2 JB. 208.7 JC. 104.3 JD. 84.5 J
Answer» Correct Answer - B `DeltaQ=DeltaU+DeltaW` `implies 54xx4.18=DeltaU+1.013xx10^(5)(167.1 xx 10^(-6)-0)` `implies DeltaU=208.7 J`

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A sample of `0.1 g` of water of `100^(@)C` and normal pressure `(1.013 xx 10^(5) N m^(-2))` requires 54 cal of heat energy to convert to steam at `100^(@)C`. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample isA. 42.2 JB. 208.7 JC. 104.3 JD. 84.5 J

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