Question

An 'energy bar' contains 24 g of carbohydrates. How much energy is this in joules?"

a. Depends on the type of carbohydrates
b. 96 J
c. 240 J
d. 144 J

Answer 1

An 'energy bar' containing 24 g of carbohydrates has an energy of 408 J in joules. An 'energy bar' contains 24 g of carbohydrates. The average fuel value of carbohydrates is 17 kJ/g. To find the energy in joules, we multiply the amount of carbohydrates (24 g) by the fuel value (17 kJ/g).

Step-by-step explanation:

An 'energy bar' contains 24 g of carbohydrates. The average fuel value of carbohydrates is 17 kJ/g. To find the energy in joules, we multiply the amount of carbohydrates (24 g) by the fuel value (17 kJ/g).

Energy in joules = 24 g x 17 kJ/g

Energy in joules = 408 kJ

Therefore, the answer is 408 J.

An 'energy bar' containing 24 g of carbohydrates has an energy of 408 J in joules. An 'energy bar' contains 24 g of carbohydrates. The average fuel value of carbohydrates is 17 kJ/g. To find the energy in joules, we multiply the amount of carbohydrates (24 g) by the fuel value (17 kJ/g).