Heat and Thermal ExpansionHard

Question

Steam at 100o C is passed through 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15oC till the temperature of the calorimeter and its contents rises to 80oC. The mass of the steam condensed in kg is :-

Options

A.0.130
B.0.065
C.0.260
D.0.135

Solution

Heat lost = Heat gained
msteam × 540 = 1100 × 1 × (80 - 15) + 20 × 1 × (80 - 15)
∴ mass of steam condensed = 0.13 kg

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