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A piece of ice of mass 50 g exists at a ...

A piece of ice of mass `50 g` exists at a temperature of `-20^(@)C`. Determine the total heart required to covert it completely to steam at `100^(@)C`. (Specific heat capacity of ice `= 0.5 cal//g-^(@)C`, specific latent heat of fusion for ice `= 80 cal//g` and specific latent heat of vaporisation for water `= 540 cal//g`).

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