Answer to Question #18601 in Molecular Physics | Thermodynamics for brian
Question #18601
how many kilojules are in calories?
1
Expert's answer
2012-11-15T07:30:38-0500
A kilojoule is a measuring unit of energy, in the same way that kilometresmeasure distance. Food energy can also be measured in terms of the nutritional or 'large' Calorie (Cal), which has the same energy value as 4.186 kilojoules (kJ). This should not be confused with the 'small' or gram calorie, which is used by scientists to measure the amount of energy required to heat water. There are 1,000 (small) calories in one (large) Calorie, which is why it is also sometimes known as a 'kilocalorie'.
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