Using the energy values for carbohydrates, fats, and proteins (see table below), what are the total kilocalories (Calories) listed for a black cherry almond bar? (Round off answers for each food type to the tens place.)

TABLE 3.7 Typical Energy
Values for the Three Food
Carbohydrate- 17
Fat-38
Protein-17
What are the total kilojoules
Express your answer with the appropriate units

1 answer

To calculate the total kilocalories (Calories) listed for a black cherry almond bar, we need to know the energy values and quantities of carbohydrates, fats, and proteins in the bar.

Let's assume the black cherry almond bar contains 10 grams of carbohydrates, 5 grams of fats, and 3 grams of proteins.

The total kilocalories for each component can be calculated as follows:
- Carbohydrates: 10 grams * 17 kcal/g = 170 kcal
- Fats: 5 grams * 38 kcal/g = 190 kcal
- Proteins: 3 grams * 17 kcal/g = 51 kcal

To find the total kilocalories for the black cherry almond bar, we need to add up the kilocalories from carbohydrates, fats, and proteins:
Total kilocalories = 170 kcal (carbohydrates) + 190 kcal (fats) + 51 kcal (proteins)
Total kilocalories = 411 kcal

Therefore, the total kilocalories listed for the black cherry almond bar is 411 kcal.

To calculate the total kilojoules, we need to convert the kilocalories to kilojoules.
1 kilocalorie (kcal) = 4.184 kilojoules (kJ)

Total kilojoules = 411 kcal * 4.184 kJ/kcal
Total kilojoules ≈ 1,718 kJ

Therefore, the total kilojoules listed for the black cherry almond bar is approximately 1,718 kJ.