A metal pot contains water. Assume that the mass of water is equal to the mass o
ID: 1492321 • Letter: A
Question
A metal pot contains water. Assume that the mass of water is equal to the mass of the pot. In order to raise the temperature of the pot and water you need to provide heat. The amount of heat that the water needs is the amount of heat that the pot needs for the same amount of change in the temperature. less than in the opposite direction more than equal to How much heat (in Joules) is required to raise the temperature of 170 grams of water from 15.8 degree to 44.3 degree C? We have 181 grams of ice at -11.1 degree C. Approximately how much heat (in Joules) do we need if we want to convert it into 181 grams of water at 15.3 degree C?Explanation / Answer
5) Since the specific heat capacity of water is more than the specific heats of metals, water will need lesser energy.
6) Q = mCT = 170 * 4.18 * (44.3 - 15.8) = 20252.1 J
7) Q = m(CiceTice + Lf,ice + CwTw)
=> Q = 181[(2.11 * 11.1) + 333.55 + (4.18 * 15.3)] = 76187.4 J