Answer:
7.75 Calories per gram of candy
Explanation:
The equation of a calorimeter is:
Q = C×ΔT
Where Q is heat involved in the reaction, C is heat capacity of the calorimeter (46.80kJ K⁻¹) and ΔT is change in temperature (2.91°C). Replacing:
Q = 46.80kJ K⁻¹ ₓ 2.91K
Q = 136.2 kJ are produced. If 4.184 kJ = 1kCal:
136.2 kJ ₓ (1kCal / 4.184 kJ) = 32.55 kCal per 4.20g of candy. Thus, Calories / g of candy are:
32.55 kCal / 4.20g = 7.75 Calories per gram of candy
