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25 December, 16:34

How much heat (in Joules) is needed to raise the temperature of 257g of ethanol (cethanol=2.4 J/g°C) by 49.1°C?

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  1. 25 December, 16:40
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    Q = 30284.88 j

    Explanation:

    Given dа ta:

    Mass of ethanol = 257 g

    Cp = 2.4 j/g.°C

    Chnage in temperature = ΔT = 49.1°C

    Heat required = ?

    Solution:

    Specific heat capacity:

    It is the amount of heat required to raise the temperature of one gram of substance by one degree.

    Formula:

    Q = m. c. ΔT

    Q = amount of heat absorbed or released

    m = mass of given substance

    c = specific heat capacity of substance

    ΔT = change in temperature

    Now we will put the values in formula.

    Q = 257 g * 2.4 j/g.°C * 49.1 °C

    Q = 30284.88 j
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