Concept explainers
Using the energy values for foods (see TABLE3.7), determine each of the following (round off the answer for each food type to the tens place):
a. the total kilojoules in two tablespoons of crunchy peanut butter that contains 6 g of carbohydrate, 16 g of fat, and 7 g of protein
b. the grams of protein in one cup of soup that has 110 kcal with 9 g of carbohydrate and 6 g of fat
c. the kilocalories in one can of cola if it has 40. g of carbohydrate and no fat or protein
d. the total kilocalories for a diet that consists of 68 g of carbohydrate, 9 g of fat, and 150 g of protein
TABLE 3.7 Typical Energy Values for the Three Food Types
Food Type | kcal/g | kJ/g |
Carbohydrate | 4 | 17 |
Fat | 9 | 38 |
Protein | 4 | 17 |
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