Calorie large

Heat is measured in term.s of the calorie, defined as the amount of heat necessary to raise the temperature of 1 gram of water at a pressure of 1 atmosphere firom 15 to 16 °C. This unit is sometimes called the small calorie, or gram calorie, to distinguish it from the large calorie, or kilocalorie, equal to 1000 small calories, which is used in nutritional studies. In mechanical engineering practice in the United States and the United Kingdom, heat is measured in British thermal units (Btu). One Btu is the quantity of heat required to raise the temperature of 1 pound of water 1 ° F and is equal to 252 calories. 

Cal.. abbrev., large calorie, kilogram calorie, calcifizieren, v.t. calcify, calcinierbar, a. calcinable, calcinieren, v.t. calcine. 

Langmuir-Blodgett layers 392,394 Large calorie, numerical value of 283 Lateral phase separation 395 Lathyrism 438 Lavoisier 281 Lead 31... 

Silver iodide is only slightly soluble in ammonia, but dissolves in sodium thiosulphate, concentrated hydriodic acid, and saturated solutions of potassium iodide.7 It forms a series of double salts with silver bromide,8 with mercuric iodide, and with the iodides of the alkali-metals.10 Double compounds of silver iodide and ammonia of the formulae AgI,8NH3 (6-92) AgI,l NH3 (7-25) AgI,NHs (8-56) AgI,2NHs (7-05) and AgI, NH3 (11-59) have also been prepared,11 the figures in parentheses indicating the calculated heats of formation in large calories. 

One calorie is defined as exactly 4.184 J. The so-called large calorie, used to indicate the energy content of foods, is really one kilocalorie, that is, 1000 calories. We shall do most calculations in joules. 

What, exactly, is meant by the statement that a particular food contains 1200 calories per serving This simply refers to the standard enthalpy of combustion of the foodstuff, as measured in a bomb calorimeter. Note, however, that in nutritional usage, the calorie is really a kilocalorie (sometimes called large calorie ), that is, 4184 J. Although this unit is still employed in the popular literature, the SI unit is now commonly used in the scientific and clinical literature, in which energy contents of foods are usually quoted in kJ per unit of weight. 

The kilogram calorie or large calorie is an obsolete term used for die kilocalorie, which is the calorie used to express the energy content of foods. However, in practice, the prefix kilo is usually omitted. 

The kilocalorie (kcal) is the familiar nutritional calorie. It is also known as the large Calorie note that in this term the C is uppercase to distinguish it from the normal calorie. The large calorie is 1000 small calories. Refer to Section 8.2 and A Human Perspective Food Calories for more information. 

The fuel value of food is an important concept in nutrition science. The fuel value is generally reported in units of nutritional Calories. One nutritional Calorie is equivalent to one kilocalorie (1000 calories). It is also known as the large Calorie (uppercase C). 

Heat of Combustion and Heat of Formation.—By the heat of combustion of a compound is meant the amount of heat which is set free when one gram-molecule of the substance is burned to carbon dioxide and water. The heats of combustion of a few of the methane hydrocarbons are given in the following table. The heat unit used is the large calorie (1000 gram calories). 

Since joules and calories are rather small units, kilojoules (kJ) and kilocalories (kcal) are used to express heat energy in many chemical processes. The kilocalorie is also known as the nutritional, or large, Calorie (spelled with a capital C and abbreviated Cal). In this book, heat energy will be expressed in joules. 

Practice (E 380) hsts five slightly different calories, all nearly equal to 4.185 J. In future, most of these will fade away, leaving only the calorie (International Table) equal to 4.186800 J. The term calorie is also used loosely, especially in the nutrition field, to mean 1000 calories, the kilocalorie, or large calorie . 

Heat quantity n. The cgs unit of heat is the calorie, the quantity of heat necessary to change the temperature of 1 g of water from 3.5 to 4.5°C (called a small calorie). If the temperature change involved is from 14.5 to 15.5°C, the unit is the normal calorie. The mean calorie is the quantity of heat necessary to raise one gram of water from 0 to 100°C. The large calorie is equal to 1000 small calories. The British thermal unit is the heat required to raise the temperature of one pound of water at its maximum density, 1°F. It is equal to about 252 cal. Dimensions of energy [ML T ]. Lide DR (ed) (2004) CRC handbook of chemistry and physics. CRC Press, Boca Raton, FL. Ready RG (1996) Thermodynamics. Plenum Publishing Co., New York. 

Metabolism Refeeding syndrome is normally associated with large calorie loads delivered by parenteral or enteral feeding. Acute respiratory failure has been attributed to refeeding syndrome induced by hypocaloric enteral tube feeding [81 ]. 

Calorie ka-b-re, lkal-re n [F calorie fr. L ca/orheat, fr. calere] (1866) (small calorie) A deprecated, small unit of heat energy the amount of heat required to raise the temperature of one gram of water, at or near 4°C, 1°C. The ASTM Standard for Metric Practice (E 380) lists five slightly different calories, all nearly equal to 4.185 J. In future, most of these will fade away, leaving only the calorie (International Table), equal to 4.186800 J. The term calorie is also used loosely, especially in the nutrition field, to mean 1,000 calories, the kilocalorie, or large calorie. ... 

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