Question

a student burns a peanut in a calorimeter. she places 10 ml of water in a test tube. she weighs a peanut before and after burning it. It weighs 3 grams before and 1 gram after burning. She determines that the temperature was at 20 degrees C before and 70 degrees C afterwards. How many kcals/g did the peanut contain?

Answer 1

It isn't clear to me what the problem is all about. Is the water in the test tube in the calorimeter or is that separate?