A frozen dinner contains 1.5 g of fat, 14 g of carbohydrates, and 11 g of protein. How much energy is contained in this meal?
Food energy
Carbohydrate 4kcal/g
Fat 9kcal/g
protein 4kcal/g
1.5(9) + 14(4) + 11(4) = ? kcal
To calculate the energy contained in the meal, we need to multiply the amount of each nutrient by its respective energy value.
Given that:
- Carbohydrates have an energy value of 4 kcal/g
- Fat has an energy value of 9 kcal/g
- Protein has an energy value of 4 kcal/g
We can calculate the energy in the meal as follows:
Energy from fat = 1.5 g × 9 kcal/g = 13.5 kcal
Energy from carbohydrates = 14 g × 4 kcal/g = 56 kcal
Energy from protein = 11 g × 4 kcal/g = 44 kcal
Total energy in the meal = Energy from fat + Energy from carbohydrates + Energy from protein
= 13.5 kcal + 56 kcal + 44 kcal
= 113.5 kcal
Therefore, this frozen dinner contains approximately 113.5 kcal of energy.