Figure a show a cylinder containing gas and closed by a movable piston. The cylinder is kept submerged in an ice-water mixture. The piston ts quickly pushed down from position 1 to position 2 and then held at position 2 until the gas is again at the temperature of the ice-water mixture; it then rs slowly raised back to position 1. Figure b is a p-V diagram for the process. If 100 g of ice is melted during the cycle, how much work has been done on thegas?

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Ice and water Start V2 Volume (a) (6) Pressure