Assume that 17% of the body mass of an 200 pound person is made up of triacylgly

Question

Assume that 17% of the body mass of an 200 pound person is made up of triacylglycerols. What is this person's total fuel reserve (in kilocalories) in the form of triacylglycerols? Hint: the conversion factor you need is 9 Calories per gram of fat. Remember that a capital "C" Calorie is equal to 1000 little "c" calories or 1 kcal. Also, there are 2.2046 lbs. per kg. Enter your answer to the nearest ones, but please note that such an answer has far more precision than is warranted; the answer is requested to the nearest ones.

Explanation / Answer

mass = 200 lb = 200*0.454 = 90.8 kg

of which 17% is fat --> 0.17*90.8 = 15.436 kg of fat

mass = 15.436 kg = 15436 g

9 Cal/g

Etotal = 9 Cal/g * 15436 g

Etotal = 138924 Cal

change to kcal

Etotal = 138924 Cal = 138924 kcal

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