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Calculate How many grams of H2O at temperature 25 degree Celsius should be poored on the ice with no water in flask initially, if we want that: (a) the final temperature is 0C and half of the added water freezes; (b) all the content freezes to -2 C;(c) the final temperature is +2C. (d) The final temperature is 0C and half of the ice melts; also determine what the entropy change in these processes is?

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