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Which contains more heat, 1 kg of water ...

Which contains more heat, 1 kg of water at `100^(@)C` or 1 kg of steam at `100^(@)C` ? Give reason for your answer.

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Which contains more heat, 1 kg of ice at 0^(@)C or 1 kg of water at 0^(@)C ? Give reason for your answer.

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How much work is done on the steam when 1.00 mol of water at 100^(@)C boils and becomes 1.00 mole of steam at 100^(@)C at 1.00 atm pressure? Assume the steam to behave as an ideal gas , detemine the change in the internal energy of the material as it vapourizes.

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