A Calorie (Cal) is equal to:

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Multiple Choice

A Calorie (Cal) is equal to:

Explanation:
In nutrition, a Calorie (capital C) is a kilocalorie, which equals 1000 of the small calories used in physics. So one Calorie is 1000 calories. In joules, 1 small calorie is 4.184 J, so 1 Calorie equals 4184 J. That makes the option with 1000 calories the correct choice; the 4.184 joules value is the energy of a single small calorie, not a Calorie, and the other two options are off by factors of 1000 or refer to the smaller unit.

In nutrition, a Calorie (capital C) is a kilocalorie, which equals 1000 of the small calories used in physics. So one Calorie is 1000 calories. In joules, 1 small calorie is 4.184 J, so 1 Calorie equals 4184 J. That makes the option with 1000 calories the correct choice; the 4.184 joules value is the energy of a single small calorie, not a Calorie, and the other two options are off by factors of 1000 or refer to the smaller unit.

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