Hi, I am able to do this question without the "80% of the heat released was absorbed by the water" part, and ended up getting 892.2g
How, does "80% of the heat released was absorbed by the water" affect the answer?
EDIT: I used the formula ((change in)$H)/n = (-mC$(change in)$T$)/$n$ to find the molar heat of combustion of ethanol. I got the mass of the water to be 892.2g.
Is it because molar heat is defined as the heat energy released by one mole of a substance undergoing combustion, and if only 80% released was absorbed, then I just multiply my answer by 0.8?
An explanation would be greatly appreciated, thankyou!