Steam at 100°C is added to 400 g water and a calorimeter of water equivalent 20 g, both initially at 20°C. Final temperature is 60°C. Use Lv = 540 cal / g and cw = 1 . Find steam condensed in g, round

Question

Steam at 100°C is added to 400 g water and a calorimeter of water equivalent 20 g, both initially at 20°C. Final temperature is 60°C. Use Lv = 540 cal / g and cw = 1 . Find steam condensed in g, rounded to nearest integer.

TestHub · Accepted Answer

Heat needed = 420 × 40 = 16800 cal. Per gram steam gives 540 + 40 = 580 cal. Mass = 16800/580 = 28.9655 g, rounding to 29 g.

Physics - Heat & Thermo Question with Solution | TestHub

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