Extra credit homeworkCh4

Extra credit homeworkCh4 - Chapter 4 Extra-Credit...

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Chapter 4 Extra-Credit e-homework! WITH ANSWERS IN BOLD 1. Which molecules with similar mass have more kinetic energy, faster moving ones or slower moving ones? 1 faster slower 2. In which physical state do molecules have the least amount of kinetic energy? 1 gas phase liquid phase solid phase 3. While traveling in Europe, you notice that a thermometer reads 28 °C. Are you wearing winter clothes (coat, hat, scarf, etc.) or summer clothes? 1 winter clothes summer clothes What is this temperature in kelvin and degrees Fahrenheit? 2 301 K 3 82°F 4. For which changes of state does energy need to be added to a substance? (Select all that apply.) 1 sublimation condensation vapor deposition freezing melting vaporization 5. Using the table , calculate in calories the heat that must be added to warm 22.1 g of each of the substances below from 28 °C to 43 °C. (a) sand 1 53 cal (b) aluminum 2 73 cal (c) water 3 36 cal Which substance requires the greatest input of heat and why? 4
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This note was uploaded on 09/16/2011 for the course CHM 1033 taught by Professor Staff during the Spring '08 term at FIU.

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Extra credit homeworkCh4 - Chapter 4 Extra-Credit...

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