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A closed calorineter of negligible water equivalent contains 1 kg of ice at `0^(@)C`, the 1 kg of steam at `100^(@)C` is pumped into it. Find the ratio of mass of steam to water remaining in the calorimeter after attaining equilibrium temperature. Take the efficiency of the calorimeter as 90%. Find the amount of heat lost to surroundings.

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Consider the following points to solve the problem. Is a sphere one, two or three dimensional body ? Does the sphere have linear, areal or volumetric expansion ? Does the mass of a body affected when it expands on heating?

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