Heat of Fusion and Heat of Vaporization
2 years ago
bwalz
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11 QuestionsShow answers
  • Question 1
    30 seconds
    Q. When water is heated from 10°C to 15°C What is the change in temperature?
    answer choices
    10 °C
    5 °C
    15 °C
    25 °C
  • Question 2
    300 seconds
    Q. When a  piece of aluminum foil is taken out of the oven and cools from 100°C to 50°C.
    What is the change in temperature?
    answer choices
    50°C
    0°C
    100°C
    150°C
  • Question 3
    30 seconds
    Q. When a baked potato at 10 °C is heated to 180 °C in the oven its temperature change is
    answer choices
    170 °C
    10 °C
    180 °C
    190 °C
  • Question 4
    30 seconds
    Q. If I have 2 blocks of Aluminium (one of 1kg and one of 10 kg) and heat them up.
    Which one heats up the fastest.
    answer choices
    1 kg
    10 kg
    They both heat up at the same speed
    They don't heat up.
  • Question 5
    30 seconds
    Q. If I heat up 2 pans of water one has 100 mL in it and one has 1000mL. Which one heats up the fastest?
    answer choices
    100 mL
    1000 mL
    They both heat up at the same speed
    They cool down.
  • Question 6
    300 seconds
    Q. How much energy is required to heat up 12kg of copper from 10 °C to 120 °C. The specific heat capacity is 390 J/kg °C.
    answer choices
    46800 J
    561600 J
    514800 J
  • Question 7
    900 seconds
    Q. How many Joules of energy are required to make 100 grams of ice at 0 οC completely melt? The specific latent heat of fusion of ice is 334000 J/kg
    answer choices
    200 J
    400 J
    33,400 J
    2,000,000 J
  • Question 8
    60 seconds
    Q. Calculate the amount of energy required to melt 35.0 grams of ice.
    (not in sig figs)  Hf = 80.0 cal/g,  Hv = 560.0 cal/g, SH = 1.00 cal/g ºC
    answer choices
    19,600 cal
    35.0 cal
    2,800 cal 
    1,568,000 cal 
  • Question 9
    60 seconds
    Q. How many calories are required to boil 75 grams of water?
    (not in sig figs)  Hf = 80.0 cal/g,  Hv = 560.0 cal/g, SH = 1.00 cal/g ºC
    answer choices
    6,000 cal
    3,360,000 cal
    42,000 cal
    7.46 cal
  • Question 10
    30 seconds
    Q. If a 8.50g ice cube at -10o C sits out on the counter, completely melts, and then warms to room temperature (25o C) how much energy did the ice cube absorb? Use C = 2.108 J/goC for ice, C = 4.184 J/goC for water, and Hf = 334 J/g.
    answer choices
    179.18 J
    2839 J
    889.1 J
    3907.3 J
  • Question 11
    30 seconds
    Q. How much energy is required to completely boil away 150g of 10o C water? Use C = 4.184 J/goC for water, and Hv = 2260 J/g.
    answer choices
    56,484 J
    339,000 J
    395,484 J
    385,484 J
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