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Question about mass of water and grams?

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A mass of water dropped in temperature by 25.1 degrees C. It gave off 5240.0J of energy in the process. approximately how many grams of water were involded?

A. 40g

B. 45g

C. 50g

D. 55g

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  1. The specific heat of water is 4.186 joule/gram °C.

    So number of grams is

    5240/(25.1*4.186) = 49.87.

    So the answer is (C).

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