jjaheimhicks42161 jjaheimhicks42161

19-12-2022
Chemistry

Answered

A calorie is defined as the amount of energy needed to raise the temperature of one gram of water one degree centigrade.

Answer :

klouissaint klouissaint

19-12-2022

Answer: one calorie is equal to approximately 4.2 joules.

Explanation: one calorie is equal to approximately 4.2 joules. 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. Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is equal to approximately 4.2 joules.

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