Chapter 15 Answer Key: Energy and Heat
Chapter 15: Energy & Heat – Key
15.1 Specific Heat Capacity
1. 1.28 x 107 J
2. – 50 600 J
3. 78.1 °C
4. 450 J/kg°C
5. 79.4 °C
6. 8.25 kg
7. 465 J/kg°C
8. 6.3 x 104 J
15.2 Heat & Phase Changes
1. 9.55 x 106 J
2. 9.56 x 105 J
3. 4.81 x 106 J/kg
4. 0.908 kg
5. 1.03 x 106 J
6. 81.2 kg
7. – 5.43 x 105 J
8. 4.87 x 105 J
9. 2.61 x 105 J
10. – 1.85 x 105 J
11. 1.21 x 107 J
12. 1.07 x 1025 J
13. 1.01 x 1021 J
15.3.1 Heating Canada’s Homes
(i) 3800 kg (ii) 456 000 ha/y (iii) 45.6 million hectares
(iv) 57/500 or 11.4% (v) 57/80 or 71%
15.3.2 Yearly Melt of Arctic Sea Ice
1. 8 x 1021 J
