Q4. (20 marks) A 500 g hot tea is at a temperature 1000C. Some ice at -100C is added to cool it. Neglect energy transfer

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Q4. (20 marks) A 500 g hot tea is at a temperature 1000C. Some ice at -100C is added to cool it. Neglect energy transfer

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Q4. (20 marks) A 500 g hot tea is at a temperature 1000C. Some
ice at -100C is added to cool it. Neglect energy transfers with the
environment. The heat of fusion of water is 333 kJ/kg and the
specific heats of ice and water are 2220 J/kg.K and 4187 J/kg.K,
respectively.
a) How much ice should be added to cool it to 400C?
b) If a 40 g ice is added, what is the equilibrium
temperature?
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