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5 Cups A Boztorn ' .f Pcuring Spout Pouring Spout Mr. Coffe Mr. Cola 1. Professor Conlin made a pot of coffee. He started with
5 Cups A Boztorn ' .f Pcuring Spout Pouring Spout Mr. Coffe Mr. Cola 1. Professor Conlin made a pot of coffee. He started with 3.5 cups of tap water, which had a mass of 0.83 kg and an initial temperature of To = 37 F or 2.8 C. The hot plate heated up the water to the boiling point, TH = 212 F or 100 .C. By the time the coffee was done, 0.5 cups of water (mass of 0.12 kg) had boiled away. Note: the specific heat of water is 4186 J/kg C. The latent heat of vaporization for water is 2.256 x 106 J/kg. (a) Find the amount of heat transfer Q, in Joules, needed to raise the temperature of the 3.5 cups of water to the boiling point. (b) Find the amount of heat transfer Q, in Joules, needed to boil away the 0.5 cups of water. (c) Find the total amount of heat transfer Q, to make the pot of coffee. (d) Where did more of the heat transfer go: heating up the 3.5 cups of water, or boiling away the 0.5 cups of water? Justify your answer with words and/or numbers
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