1.

A bucket containing 8kg of water at 25c.2kg of water at 80c poured into it. Neglecting the heat energy absorbed by bucket, calculate the final temperature of water

Answer»

principle of calorimetry,Heat GAINED by cold water = Heat lost by hot waterLet the final temperatures be x8*4200*(X - 25) = 2*4200*(80 - x)or, 8x - 200 = 160 - 2xor, 10x = 360or, x = 36Final TEMPERATURE of the MIXTURE = 36 degC



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