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Defined as 1 ⁄ 100 of the amount of energy required to warm one gram of air-free water from 0 to 100 °C at standard atmospheric pressure. [b] International Steam Table calorie (1929) ≈ 4.1868 J ≈ 0.003 9683 BTU ≈ 1.1630 × 10 −6 kW⋅h ≈ 2.6132 × 10 19 eV Defined as 1 ⁄ 860 "international" watt hours = 180 ⁄ 43 "international ...
1.0 kcal (4.2 kJ) calorie: cal cal ... 1.0 ft⋅lbf (1.4 J) ftlb-f ft⋅lb f: foot-pound: ftlb ft⋅lb inch-pound force: inlbf in⋅lbf 1.0 ...
The "grand calorie" (also "kilocalorie", "kilogram-calorie", or "food calorie"; "kcal" or "Cal") is 1000 cal, that is, exactly 4184 J. It was originally defined so that the heat capacity of 1 kg of water would be 1 kcal/°C. With these units of heat energy, the units of heat capacity are 1 cal/°C = 4.184 J/K ; 1 kcal/°C = 4184 J/K.
kT (also written as k B T) is the product of the Boltzmann constant, k (or k B), and the temperature, T.This product is used in physics as a scale factor for energy values in molecular-scale systems (sometimes it is used as a unit of energy), as the rates and frequencies of many processes and phenomena depend not on their energy alone, but on the ratio of that energy and kT, that is, on E ...
1 cal/(°C⋅mol) ("small calorie") = 4.184 J⋅K −1 ⋅mol −1 1 kcal/(°C⋅mol) ("large calorie") = 4184 J⋅K −1 ⋅mol −1. The molar heat capacity of a substance has the same dimension as the heat capacity of an object; namely, L 2 ⋅M⋅T −2 ⋅Θ −1, or M(L/T) 2 /Θ. (Indeed, it is the heat capacity of the object that ...
As typically measured, one kcal/mol represents a temperature increase of one degree Celsius in one liter of water (with a mass of 1 kg) resulting from the reaction of one mole of reagents. In SI units, one kilocalorie per mole is equal to 4.184 kilojoules per mole (kJ/mol), which comes to approximately 6.9477 × 10 −21 joules per molecule, or ...
The joule (/ dʒ uː l / JOOL, or / dʒ aʊ l / JOWL; symbol: J) is the unit of energy in the International System of Units (SI). [1] It is equal to the amount of work done when a force of one newton displaces a mass through a distance of one metre in the direction of that force.
The calorie is defined as the amount of thermal energy necessary to raise the temperature of one gram of water by 1 Celsius degree, from a temperature of 14.5 °C, at a pressure of 1 atm. For thermochemistry a calorie of 4.184 J is used, but other calories have also been defined, such as the International Steam Table calorie of 4.1868 J.