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Question

Express calorie in Joules.


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Solution

  1. The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius.
  2. Joule is the SI unit of heat.
  3. Conversion between calorie and joule is given as
  4. 1 calorie = 4.418Joules

Hence, 1 calories can be expressed as 4.418Joules.


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