Question

A researcher studying the nutritional value of a new candy places a 6.30-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.00 °C. If the heat capacity of the calorimeter is 37.20 kJ·K–1, how many nutritional Calories are there per gram of the candy?

Answer 1

2 Celsius is 275.15 Kelvin

37.2 kJ/K * 275.15 K = energy in kJ -> convert to nutritional cal

energy in cal / 6.3 grams = energy in cal /gram