Heat and Thermal ExpansionHard

Question

The temperature of a body rises by 44oC when a certain of heat is given t it. The same heat when supplied to 22 g of ice at - 8oC, raises its temperature by 16oC. The water eqivalent of the body is
[Given : swater = 1 cal / goC & Lf = 80 cal / g, sice = 0.5 cal /goC]

Options

A.25 g
B.50 g
C.80 g
D.100 g

Solution

Supplied heat = (22) (0.5) (8) + (22) (80) + (22) (1) (16) = 88 + 1760 + 352 = 2200 cal
Heat capacity of the body = = 50 cal/oC
Water equavalent of the body = = 50 g

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