One tablespoon of cookie dough has a mass of 13.63 g. It is combusted in a...

Question

Question

One tablespoon of cookie dough has a mass of 13.63 g. It is combusted in a calorimeter whose heat capacity is 71.10 kJ/C. The

Answer 1

Answer #1

Given:
C = 71.10 KJ/oC

Energy released,
Q = Ccal*delta T
= 71.10 KJ/oC * (24.11 - 21.34) oC
= 196.9 KJ

1 food calorie = 4.184 KJ

Converting this energy to food calorie

Q = 196.9 KJ / 4.184 KJ/Cal
= 47.07 Cal

This is for 13.63 g

so,
food calorie per gram = 47.07 Cal/13.63 g
= 3.45 Cal/g

Answer: 3.45 Cal/g

Answer 2

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