A typical diet provides about 2000 food Calories per day,or 2000 kilocalories.Calculate the equivalent number of joules.

Name: A typical diet provides about 2000 food Calories per day,or 2000 kilocalories.Calculate the equivalent number of joules.
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Question

Quizplus · Accepted Answer

To convert kcal to J, we need to multiply by 4,184 (1 kcal = 4,184 J). 
Therefore, 2000 kcal = 2000 x 4,184 J = 8,368,000 J = 8 x 10^6 J. 
The only option that is close to this value is (C): 8 x 10^16 J.

A Typical Diet Provides About 2000 Food Calories Per Day,or