How many grams of ice must be added to water

Reference no: EM131000354

The following scenarios apply to the process of calorimetry as a means to quantitatively measure heat transfer.

a. How many grams of ice at -17 ^oC must be added to 741 g of water that is initially at a temperature of 70 ^oC to produce water at a final temperature of 12 ^oC? Assume that no heat is lost to the surroundings and that the container has negligible mass. The specific heat of liquid water is 4,190 J/kg · ^oC and that of ice is 2,000 J/kg · ^oC. For water, the normal melting point is 0 ^oC, and the heat of fusion is 334 x 10³ J/kg. The normal boiling point is 100 ^oC, and the heat of vaporization is 2.256 x 10⁶ J/kg.

b. An unknown solid sample with a mass of 85.0 g at a temperature of 100.0 ^oC is placed in a calorimeter. The calorimeter vessel is made of 0.1500 kg of copper and contains 0.200 kg of water. Both the calorimeter vessel and the water are initially at 19.0 ^oC.

Reference no: EM131000354

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