A candy sample is completely combusted in a bomb calorimeter.The calorimeter contains 982 g of water,and the measured temperature increase is 2.62°C.What is the fuel value of the candy sample in nutritional Calories? [SHw = 1.00 cal/(g•°C)]

Question

Quizplus · Accepted Answer

The heat absorbed by the water is calculated as: q = mass × specific heat × temperature change = 982 g × 1.00 cal/(g°C) × 2.62°C = 2572.84 cal. To convert to nutritional Calories (1 Cal = 1000 cal), divide by 1000: 2572.84 cal / 1000 = 2.57284 Cal, which rounds to 2.57 Cal.

A Candy Sample Is Completely Combusted in a Bomb Calorimeter