QuestionJune 11, 2025

One cup of kidney beans contains 15 g of protein, 1g of fat, and 428 of carbohydrate. How many kilocalories, to two significant figures, does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate, 9kcal/g for fat, and 4kcal/g for protein.) 240 kcal 230 kcal 520 kcal 88 kcal

One cup of kidney beans contains 15 g of protein, 1g of fat, and 428 of carbohydrate. How many kilocalories, to two significant figures, does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate, 9kcal/g for fat, and 4kcal/g for protein.) 240 kcal 230 kcal 520 kcal 88 kcal
One cup of kidney beans contains 15 g of protein, 1g of fat, and 428 of carbohydrate. How many kilocalories, to two significant figures, does this sample contain? (The caloric values are: 4 kcal/g for carbohydrate, 9kcal/g for fat, and 4kcal/g for protein.) 240 kcal 230 kcal 520 kcal 88 kcal

Solution
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Answer

240 kcal Explanation 1. Calculate protein calories Multiply grams of protein by caloric value: 15 \, \text{g} \times 4 \, \text{kcal/g} = 60 \, \text{kcal}. 2. Calculate fat calories Multiply grams of fat by caloric value: 1 \, \text{g} \times 9 \, \text{kcal/g} = 9 \, \text{kcal}. 3. Calculate carbohydrate calories Multiply grams of carbohydrate by caloric value: 42 \, \text{g} \times 4 \, \text{kcal/g} = 168 \, \text{kcal}. 4. Sum total calories Add all calorie values: 60 + 9 + 168 = 237 \, \text{kcal}.

Explanation

1. Calculate protein calories<br /> Multiply grams of protein by caloric value: $15 \, \text{g} \times 4 \, \text{kcal/g} = 60 \, \text{kcal}$.<br />2. Calculate fat calories<br /> Multiply grams of fat by caloric value: $1 \, \text{g} \times 9 \, \text{kcal/g} = 9 \, \text{kcal}$.<br />3. Calculate carbohydrate calories<br /> Multiply grams of carbohydrate by caloric value: $42 \, \text{g} \times 4 \, \text{kcal/g} = 168 \, \text{kcal}$.<br />4. Sum total calories<br /> Add all calorie values: $60 + 9 + 168 = 237 \, \text{kcal}$.
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