Steam at 100º C is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15º C till the temperature of the calorimeter and its contents rises to 80º C. The mass of the steam condensed in kilogram is:
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A
Heat released by steam = heat gained by water and calorimetry
mL + m × S (100 – 80) = (1.1 + 0.02) × S × (80 – 15)
m × 540 + 20 m = 1.12 × 65
m = 0.130 kg.
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