What is meant by 1 calorie heat ? or define 1 calorie.
1 Answer
1 calorie heat is the heat energy required to raise the temperature of 1 g pure water by 1 °C.
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.By these definitions, 1 large calorie equals 1,000 small calories, as 1 kg equals 1,000 grams. To avoid confusion between large and small calories, it's thought that the term kilocalorie — the prefix “kilo” meaning 1,000 — was created to refer to a large calorie.
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.
The calorie, or gram calorie, is the quantity of heat required to raise the temperature of 1 gram of pure water 1C. The kilocalorie, or kilogram calorie, is the quantity of heat required to raise the temperature of 1 kg of pure water 1C; it is equal to 1,000 cal.The "calorie" we refer to in food is actually kilocalorie. One (1) kilocalorie is the same as one (1) Calorie (uppercase C). A kilocalorie is the amount of heat required to raise the temperature of one kilogram of water one degree Celsius.
Calorie, a unit of energy or heat variously defined. ... 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.To convert a kilocalorie measurement to a calorie measurement, multiply the energy by the conversion ratio. The energy in calories is equal to the kilocalories multiplied by 1,000.