7. You put an ice cube of temperature −2.0°C and mass 0.20kg in your mug of coffee which is at 30.0°C to cool it off. Let’s assume we can treat coffee as if it is water (to a good approximation). What temperature does your coffee reach if there is no energy loss to the surroundings and the mass of water is 0.40kg? cice = 2108 J/kgKcwater = 4187 J/kgKcsteam = 1996 J/kgKLfusion = 334 kJ/kgLvaporisation = 2265 kJ/kg

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Q: _ 8. Suppose you mix two identical blocks of metal, one having a temperature of 10°C and the other…

A: Answer: D. Yes, because it adheres to the II law of thermodynamics.

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A: Solution

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A: The amount of heat gained by the ice will be the heat released by the aluminum and water.

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A: Here, the heat loss by the water will be equal to the heat gain by the ice. mWsW∆T=miceL+micesW∆T

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