what is the amount of heat needed to raise the temperature of 1 kilogram of water 1 degree celsius.
What is the amount of heat needed to raise the temperature of 1 kilogram of water 1 degree celsius.
calorie, abbr. Cal, unit that heat energy in the metric system. The measure up of warmth is dubbed calorimetry. The calorie, or gram calorie, is the amount of heat required to raise the temperature of 1 gram the pure water 1°C. The kilocalorie, or kilogram calorie, is the amount of heat forced to progressive the temperature the 1 kg the pure water 1°C; that is same to 1,000 cal. The kilocalorie is offered in dietetics because that stating the heat content the a food, i.e., the quantity of heat power that the food can yield together it passes v the body; in this context, the kilocalorie is usually dubbed simply the calorie. The amount of heat energy needed to result a 1°C temperature boost in 1 gram of water varies through temperature (see warmth capacity); thus the temperature selection over i m sorry the heating takes place must be proclaimed to specify the calorie precisely. The 15° calorie, or common calorie, is widely provided in chemistry and physics; the is measured by heating a 1-gram water sample indigenous 14.5°C to 15.5°C in ~ 1 atmosphere pressure. The 4° calorie, also called the little calorie or therm, is measured from 3.5°C come 4.5°C (water is most dense at 3.98°C); the large calorie, or Calorie, is indistinguishable to 1,000 tiny calories. The mean value the the calorie in the variety 0°C come 100°C is called the typical calorie; that is 1⁄100 that the energy needed to warm 1 gram the water native its melting allude to its boil point. The calorie may also be defined by to express its value in part other power units. The 15° calorie is identical to 4.185 joules (J), 1.162×10−6 kilowatt-hours, 3.968×10−3 British heat units, and 3.087 foot-pounds; the 4° calorie equates to 4.204 J; and the average calorie equals 4.190 J. Two other calories occasionally used space the International vapor Table calorie, same to 4.187 J, and also the thermochemical calorie, same to 4.184 J. As soon as the calorie is offered for precision measurement of warm energy, the particular calorie gift used must be specified.
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