A researcher studying the nutritional value of a new candy places a 4.40-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.87 °C. If the heat capacity of the calorimeter is 41.50 kJ·K–1, how many nutritional Calories are there per gram of the candy?

Question

anonymous · Answer

To figure this out, first calculate the total amount of energy produced by the combustion: this is the heat capacity of the calorimeter multiplied by the increase in the temperature. I would then divide this by the weight of the sample in grams. The next thing is to convert from kiloJoules to calories: one food calorie is equal to 4.184kJ.

anonymous · Answer

I hope this answers your question but if not then I can explain further, best wishes