One cup of kidney beans contains 15 g of protein,1 g of fat,and 42 g of carbohydrate.How many kilocalories,to two significant figures,does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.)

Question

Quizplus · Accepted Answer

To calculate the number of kilocalories in one cup of kidney beans, we first need to calculate the calories from each macronutrient.

Carbohydrates: 42 g x 4 kcal/g = 168 kcal 
Protein: 15 g x 4 kcal/g = 60 kcal 
Fat: 1 g x 9 kcal/g = 9 kcal

Next, we add up the calorie values for each macronutrient:

168 kcal + 60 kcal + 9 kcal = 237 kcal

Rounding to two significant figures, the answer is 240 kcal (D).

One Cup of Kidney Beans Contains 15 G of Protein,1