A gas in a cylinder with a movable piston is in an ice bath. The piston is quickly pushed down and held until the gas is again at 0 ∘ C, then slowly raised to its starting position. If 150 g of ice me

Question

A gas in a cylinder with a movable piston is in an ice bath. The piston is quickly pushed down and held until the gas is again at 0 ∘ C, then slowly raised to its starting position. If 150 g of ice melt during the cycle, find the net work done on the gas in calories (latent heat of ice = 80 cal g − 1 ).

TestHub · Accepted Answer

The gas returns to its initial state, so Δ U = 0 and the net work on the gas equals the heat passed to the ice: W = m L = 150 × 80 = 12000 cal.

Physics - Heat & Thermo Question with Solution | TestHub

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