worksheet 15cgt - Worksheet # 15 Energy 1. Define kinetic...

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Worksheet # 15 Energy 1. Define kinetic and potential energy and state the difference between them. 2. What is the first law of thermodynamics? 3. Define system and surroundings. 4. Define exothermic and endothermic. 5. The nutritional Calorie is the equivalent of 1 kcal. One pound of body fat is equivalent to about 4.1x10 3 Calories. Convert this to Joules and kJ. 6. Thermal decomposition of 5.0 metric tons of limestone to lime and carbon dioxide requires 9.0x10 6 kJ of heat. Convert this energy to joules and calories. Energy and Chemical Change 7. “Hot packs” used by skiers, climbers, and others for warmth are based on the crystallization of sodium acetate from a highly concentrated solution. What is the sign of H for this crystallization? Is the reaction exothermic or endothermic? 8. Classify the following processes as exothermic or endothermic: (a) freezing of water; (b) boiling of water; (c) digestion of food; (d) a person running; (e) a person growing; (f) wood being chopped; (g) heating with a furnace. 9. Draw an enthalpy diagram for a general exothermic reaction; label axis, reactants, products, and H with its sign. 10.
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worksheet 15cgt - Worksheet # 15 Energy 1. Define kinetic...

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