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24 May, 07:43

Ethyl alcohol has a heat of vaporization of 850. J/g. What mass of ethyl alcohol can be boiled using 15000 J of energy?

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  1. 24 May, 07:47
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    The amount of heat, H, needed to boil off certain mass, m, of the substance is given by the equation,

    H = mHv

    where Hv is the heat of vaporization. Manipulating the equation, the mass is calculated by,

    m = H/Hv

    Substituting the known values,

    m = 15000 J / (850 J/g) = 17.65 g

    Thus, the mass of ethyl alcohol is approximately 17.65 g.
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