Thermochemistry?

Question

How much heat will be absorbed or released if 12.5g glucose reacts with excess sugar?

Answer 1

Once you calculate delta H for the combustion of glucose, you should recognize that the value you get is for the combustion of one mole of glucose.

Convert your 12.5 grams from this problem into moles by dividing by the molar mass of glucose. Then, multiply that number of moles by the delta H for the combustion of glucose, and you've got it.