A 55.0 g piece of metal was heated in boiling water to a temperature of 99.8oC and dropped into an insulated beaker with 225 mL of water (d = 1.00 g/ml) at 21.0 oC. The final temperature of the metal and water is 23.1oC. Calculate the specific heat of - PowerPoint PPT Presentation

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A 55.0 g piece of metal was heated in boiling water to a temperature of 99.8oC and dropped into an insulated beaker with 225 mL of water (d = 1.00 g/ml) at 21.0 oC. The final temperature of the metal and water is 23.1oC. Calculate the specific heat of

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Octane, C8H18, a primary constituent of gasoline, burns in air. ... Suppose that a 1.00 g sample of octane is burned in a calorimeter that contains ... – PowerPoint PPT presentation

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Title: A 55.0 g piece of metal was heated in boiling water to a temperature of 99.8oC and dropped into an insulated beaker with 225 mL of water (d = 1.00 g/ml) at 21.0 oC. The final temperature of the metal and water is 23.1oC. Calculate the specific heat of


1
  • A 55.0 g piece of metal was heated in boiling
    water to a temperature of 99.8oC and dropped into
    an insulated beaker with 225 mL of water (d
    1.00 g/ml) at 21.0 oC. The final temperature of
    the metal and water is 23.1oC. Calculate the
    specific heat of the metal assuming that no heat
    was lost to the surroundings.

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  • Octane, C8H18, a primary constituent of gasoline,
    burns in air.
  • C8H18(l) 25/2 O2(g) ?? 8 CO2(g) 9
    H2O(l)
  • Suppose that a 1.00 g sample of octane is burned
    in a calorimeter that contains 1.20 kg of water.
    The temperature of the water and the bomb rises
    from 25.00oC to 33.20oC. If the specific heat of
    the bomb, Cbomb, is known to be 837 J/oC,
    calculate the molar heat of reaction of C8H18.

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  • Calculate the amount of heat required to convert
    500 g of ice at ?50oC to steam at 200oC.
  • specific heat of ice 2.06 J/goC
  • specific heat of water 4.184 J/goC
  • specific heat of steam 2.0 J/goC
  • heat of fusion 333 J/g
  • heat of vaporization 2226 J/g

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  • A quantity of ice at 0oC is added to 90.0 g of
    water at 80oC. After the ice melted, the
    temperature of the water was 25oC. How much ice
    was added?

7
  • 50.0 g of ice at -20.0 oC are added to 342.0 g of
    water at 86.0 oC. What will be the final
    temperature of the sample?

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