A black body calorimeter filled with hot water cools from 60 C to 50 C in 4 minutes and 40 C to 30 C in 8 minutes The

Question

A black body calorimeter filled with hot water cools from 60 C to 50 C in 4 minutes and 40 C to 30 C in 8 minutes The approximate temperature of surrounding is use average method 10 C 15 C 20 C 30 C

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