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Ice at -10 degrees C and steam at 130 degrees C are brought together at atmospheric...

Ice at -10 degrees C and steam at 130 degrees C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 50.0 degrees C is present. Ignoring the container and the equilibrium vapor pressure of the liquid at 50 degrees C, find the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020J/(kg degree C). Explain everything you´ve done.

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