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March 30, 2017

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how many kilojoules of heat must be transferred to a 480 g aluminum pizza pan to raise its temperature from 22 degree c to 234 degree c? The specific heat of aluminum in this temperature range is 0.97 J/g degree C.

  • science - ,

    recall that heat absorbed released is given by
    Q = mc*(T2 - T1)
    where
    m = mass (in g)
    c = specific heat capacity (in J/g-k)
    T = temperature (in C or K)
    *note: Q is (+) when heat is absorbed and (-) when heat is released.
    substituting,
    Q = (480)*(0.97)*(234 - 22)
    Q = 98707 J = 98.7 kJ

    hope this helps~ :)

  • science - ,

    iqj

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