What is defined as the amount of energy needed to increase the temperature of one gram of water by 1°c. one calorie equals 4.184 joules?
- Correct Answer: calorie
- fat
- weight
- sulfur
Explanation: A related unit is the calorie. This term arose prior to the establishment of the SI system and is now replaced by the joule in most situations. One calorie is defined as the amount of energy needed to increase the temperature of one gram of water by 1°C. One calorie equals 4.184 joules. Note that this calorie is not exactly the same as the calories listed on food products. One food Calorie (usually written with a capital C) is equal to 1000 “regular” calories. Thus, a 140-Calorie snack can be fully digested to produce 140,000 calories of energy. We will use the SI unit joules in our discussions of heat energy.
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