The average fuel value of sugars is 17 kJ/g. A 2.0 L pitcher of sweetened Kool-Aid contains 400 g of sugar. What is the fuel value (in kJ)of a 500 mL serving of Kool-Aid? (Assume that the sugar is the only fuel source.)

Question

Quizplus · Accepted Answer

First, we need to calculate the total fuel value of the sugar in the pitcher of Kool-Aid:

Fuel value = 17 kJ/g x 400 g
Fuel value = 6,800 kJ

Next, we need to calculate the fuel value per serving, which is 500 mL or 0.5 L:

Fuel value per serving = 6,800 kJ / (2.0 L / 0.5 L per serving)
Fuel value per serving = 1,700 kJ

Therefore, the fuel value of a 500 mL serving of Kool-Aid is 1.7 x 10^3 kJ, which is closest to option B: 1.7 x 10^13.

The Average Fuel Value of Sugars Is 17 KJ/g