a scoop of icecream(100g) has an energy value of 775 000 joules. what is this value in Calories?

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a scoop of icecream(100g) has an energy value of 775 000 joules. what is this value in Calories?

(note that 1 cal= 4.184J.)

a. 185 000 Cal
b. 77 500 000 Cal
c. 185 Cal
d. 7750 Cal

2007-02-17 03:29:14 · 2 answers · asked by lana l 1 in Science & Mathematics ➔ Chemistry

2 answers

Just divide the joules by 4.184 joules/cal to get calories. Now, notice that your answer choices are in Calories (with an upper case C). Those are "nutritional calories" rather than "chemical calories". A nutritional calorie is 1000 chemical calories, so divide your original answer by 1000 to get nutritional calories.

2007-02-17 03:38:06 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋

a. 185 000 Cal

2007-02-17 11:38:51 · answer #2 · answered by dlln5559 2 · 0⤊ 0⤋