Chemhw5.11

8 Questions | Total Attempts: 299

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Kinetic Energy Quizzes & Trivia

These questions deal with average kinetic energy (temperature), heat of fusion, heat of vaporization, and specific heat. REMEMBER: PERIOD# followed by FIRST & LAST NAME (ex: 4 Joe Smith) you must score at least 70


Questions and Answers
  • 1. 
    How much heat energy must be absorbed to completely melt 35.0 grams of H2O(s) at STP?
    • A. 

      9.54 J

    • B. 

      146 J

    • C. 

      11 700 J

    • D. 

      79 100 J

  • 2. 
    The temperature of a sample of water changes from 10C to 20C when the water absorbs 418 joules of heat.  What is the mass of the sample?
    • A. 

      1 g

    • B. 

      10 g

    • C. 

      100 g

    • D. 

      1000 g

  • 3. 
    What is the total number of joules released when a 5.00-gram sample of water changes from liquid to solid at STP?
    • A. 

      334 J

    • B. 

      1670 J

    • C. 

      2260 J

    • D. 

      11 300 J

  • 4. 
    Which sample of Fe contains particles having the highest average kinetic energy?
    • A. 

      5 g at 10C

    • B. 

      10 g at 25 C

    • C. 

      5 g at 400 K

    • D. 

      10 g at 300 K

  • 5. 
  • 6. 
    An increase in the average kinetic energy of a sample of copper atoms occurs with an increase in
    • A. 

      Concentration

    • B. 

      Temperature

    • C. 

      Pressure

    • D. 

      Volume

  • 7. 
    At which temperature would atoms of a He(g) sample have the greatest average kinetic energy?
    • A. 

      25 C

    • B. 

      37 C

    • C. 

      273 K

    • D. 

      298 K

  • 8. 
    As the temperature of a substance decreases, the average kinetic energy of its particles
    • A. 

      Decreases

    • B. 

      Increases

    • C. 

      Remains the same