A 0.100-g sample of your favorite candy is burned in a calorimeter that contains 1.00 kg of water initially at 26.0∘C. After the candy is burned, the water temperature is 38.0∘C. How many Calories per gram are there of your candy?

Question

A 0.100-g sample of your favorite candy is burned in a calorimeter that contains 1.00 kg of water initially at 26.0∘C. After the candy is burned, the water temperature is 38.0∘C.  How many Calories per gram are there of your candy?

aaronq · Answer

1 calorie is equivalent to the energy necessary to raise the temperature of 1 gram of water by 1$\^{o}C$, (this is how we define a calorie).  In 1 kg there is 1000 grams.
So, the calories given off by combustion of the candy=$\Delta T*1000=(T_f-T_i)*1000$