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
anthonyfoschini1
Question
Ethyl alcohol has a heat of vaporization of 850. J/g. What mass of ethyl alcohol can be boiled using 15000 J of energy?
2 Answer

1. User Answers BlueSky06
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. 
2. User Answers IlaMends
Answer:
17.64 grams of ethyl alcohol can be boiled using 15000 J of energy.
Explanation:
Heat of vaporization of ethyl alcohol = [tex]=\Delta H_{vap}850 J/g[/tex]
Mass of ethyl alcohol boiled using 15000 Joule of energy = m
Q = 15000 J
[tex]Q=m\times \Delta H_{vap}[/tex]
[tex]15000 J=m\times 850 J/g[/tex]
m = 17.64 g
17.64 grams of ethyl alcohol can be boiled using 15000 J of energy.