Question

At Copper coin minting factory, 20 gm Cu coins are manufac- tured at 1000◦ C. If the water tank in the cooling unit has 29 liters of water at 30◦C. In the tank 14 Kg of ice at 0◦ C is added. Deter- mine minimum number of coins that must be put in the water tank so as to have no ice left in the tank. Sp heat of Cu 0.3864 J/g◦C. Latent heat of melting = 80 cal/g, latent heat of evaporation of water = 540 cal/g, Mechanical equivalent of heat = 4.2 ​

Answer 1

Answer:

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