Exercise 10 - Heat Transfer - Key.pdf - Chemistry 107 \u2013 Problem Solving Solution Key 1 How many joules of energy are required to raise the temperature

Exercise 10 - Heat Transfer - Key.pdf - Chemistry 107...

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Chemistry 107–Problem SolvingSolution Key1.How many joules of energy are required to raise the temperature of 75 g of water from 20.0J16000J69051qC)C)(50.0 J/gg)(4.184(75TmCqo2.A 250.0 g metal bar requires 5.866 kJ to change its temperature from 22 oC to 100.0 oC. What is the specific heat of the metal?o3.If 40.0 kJ of energy is absorbed by 500.0 g of water at 10.0 oC, then what is final temperature of the water?TT119.4.Anthracite coal, 1.0 g, produces 7.000 x 103cal when burned. How many joules of energy does this represent?C?q

5.When a 43.0 g sample of metal at 100.0oC is added to 38.0 g of water at 23.72o