InterviewSolution
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One kg of ice at 0°C is mixed with l iwater at 10°C. The resulting temperature7be(A) between 0°C and 10°C(C) less than 0°C(D) greater than 0°C |
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Answer» Specific heat of water is 1 cal/g. There is totally 1kg, so it possesses 1000cal of energy. Now, since ice is already at 0 Celsius, it needs latent heat to turn into water. This energy is provided by the water. Latent heat of ice is 80cal/g. So, for 1kg, it requires 8000cal. But water only possess 1000cal of energy. So, only certain mass of ice will get converted into water at 0C, and the rest of the water at 10C will cool down to 0C also. But, since only 1000cal is available, part of the ice remains as ice. So, temperature in the end is 0 Celsius. A. how plz explain full when we mix ice in water that is 0° it melts to upto 0° and when this cold water is mixed with 10°hot water the cold water gets some heat from hot but not reach upto 10° |
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