Question

a food label indicates that a 62.0 g serving contains 10.00 g fat, 36.0 g carbohydrate, 8.00 g protein, 4.00 g fiber, and the rest is water. assume that fat is 9.00 cal/g, and that carbohydrate and protein are 4.00 cal/g. how many nutritional calories are in the serving? what is the % cal from fat? the only components that contain significant energy are fat, protein, and carbohydrate. the serving size of 62.0 g contains non - energy substances and is not relevant to the calculation. the problem can be set up as follows: fat (10.00 g)(1) = 2 cal carb (36.0 g)(3) = 4 cal protein (8.00 g)(5) = 6 cal 7 cal a. true b. false c. 9.00 cal/g d. 4.00 cal/g e. 36.0 f. 32.0 g. 144 h. 90.0 i. 33.8 j. 10.0 k. 266

Explanation:

Step1: Calculate calories from fat

We know fat is 10.00 g and energy - density of fat is 9.00 Cal/g. So, calories from fat = mass of fat×energy - density of fat.
$(10.00\ g)\times(9.00\ Cal/g)=90.0\ Cal$. So, for fat: 1 is C. 9.00 Cal/g, 2 is H. 90.0.

Step2: Calculate calories from carbohydrate

The mass of carbohydrate is 36.0 g and energy - density of carbohydrate is 4.00 Cal/g. So, calories from carbohydrate = mass of carbohydrate×energy - density of carbohydrate.
$(36.0\ g)\times(4.00\ Cal/g)=144\ Cal$. So, for carb: 3 is D. 4.00 Cal/g, 4 is G. 144.

Step3: Calculate calories from protein

The mass of protein is 8.00 g and energy - density of protein is 4.00 Cal/g. So, calories from protein = mass of protein×energy - density of protein.
$(8.00\ g)\times(4.00\ Cal/g)=32.0\ Cal$. So, for protein: 5 is D. 4.00 Cal/g, 6 is F. 32.0.

Step4: Calculate total calories

Total calories = calories from fat+calories from carbohydrate+calories from protein.
$90.0 + 144+32.0=266\ Cal$. So, 7 is K. 266.

Answer:

1. C. 9.00 Cal/g
2. H. 90.0
3. D. 4.00 Cal/g
4. G. 144
5. D. 4.00 Cal/g
6. F. 32.0
7. K. 266