1. How much heat energy is required to change 200 g of ice at -20°c to water at 70°C?
(Given: Latent heat of fusion of ice = 335 kJ kg ^-1, and specific heat of ice is2100 J kg^-1 °C^-1, specific heat of water = 4.2 kJ kg^-1 °C^-1)
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5100 is correct answer hai......
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