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aleksklad [387]
3 years ago
10

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

Chemistry
2 answers:
True [87]3 years ago
4 0

Answer:

17.64 grams of ethyl alcohol can be boiled using 15000 J of energy.

Explanation:

Heat of vaporization of ethyl alcohol = =\Delta H_{vap}850 J/g

Mass of ethyl alcohol boiled using 15000 Joule of energy = m

Q = 15000 J

Q=m\times \Delta H_{vap}

15000 J=m\times 850 J/g

m = 17.64 g

17.64 grams of ethyl alcohol can be boiled using 15000 J of energy.

Verdich [7]3 years ago
3 0
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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