How much alcohol must be burned to generate 279kj of heat to warm the water as described in

problem 3?(from 60 F to 180 F)
a. 18.7 g
b. 2.9 g
c. 1.6 g
d. 10.4 g
e. 9.3 g

the answer is D help with solution?

2 answers

You need the given heat of combustion for the alcohol.

massAlc*HeatCombustion= 279kj
solve for mass of Alcohol.
how would i know which heat of combustion to use for this question?