Temperature and Thermal Energy calculations
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Questions and Answers

What is the specific heat of water in J/g °C?

  • 2.1
  • 1.00
  • 4.184 (correct)
  • 0.449
  • How much heat, in joules, is needed to heat 8.0 × 102 g of water by 64 °C?

  • 184,000
  • 210,000 (correct)
  • 230,000
  • 160,000
  • What is the specific heat of iron in J/g °C?

  • 0.449 (correct)
  • 0.900
  • 4.184
  • 0.451
  • In the Solana Generating Station, what substance is heated by focusing sunlight through parabolic mirrors?

    <p>Heat transfer fluid</p> Signup and view all the answers

    What is the power output of the Ivanpah Solar Generating System in megawatts?

    <p>377</p> Signup and view all the answers

    What is used as a thermal energy storage system in the Solana Generating Station?

    <p>Molten salts</p> Signup and view all the answers

    What is the temperature at which steam is produced at the Ivanpah Solar Generating System?

    <p>&gt;538 °C</p> Signup and view all the answers

    What property of molten salts makes them suitable for solar thermal systems?

    <p>'High heat capacities and thermal conductivities'</p> Signup and view all the answers

    If a 124 g piece of metal absorbs 8.77 kJ of heat, increasing its temperature from 27.5 °C to 85.3 °C, what is the specific heat of this metal?

    <p>0.812 J/g °C</p> Signup and view all the answers

    How much heat, in joules, is needed to heat a 615 g piece of metal by 50.4 °C? The specific heat of this metal is 0.732 J/g °C.

    <p>28900 J</p> Signup and view all the answers

    Which metal is likely to have a specific heat of 0.281 J/g °C?

    <p>Gold</p> Signup and view all the answers

    A 362 g piece of metal absorbs 4.88 kJ of heat, raising its temperature from 18.6 °C to 42.8 °C. What is the specific heat of this metal?

    <p>1.078 J/g °C</p> Signup and view all the answers

    How much heat, in joules, is required to raise the temperature of a 717 g piece of metal by 36.7 °C? The specific heat of this metal is 0.659 J/g °C.

    <p>18800 J</p> Signup and view all the answers

    Which metal is most likely to have a specific heat of 0.543 J/g °C?

    <p>Silver</p> Signup and view all the answers

    A 285 g piece of metal absorbs 5.92 kJ of heat, increasing its temperature from 32.6 °C to 67.8 °C. What is the specific heat of this metal?

    <p>0.979 J/g °C</p> Signup and view all the answers

    How many joules of heat are needed to raise the temperature of a 469 g piece of metal by 43.2 °C? The specific heat of this metal is 0.381 J/g °C.

    <p>$8.75 x 10^{4}$ J</p> Signup and view all the answers

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