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The PN molecule is considered unstable, but is a product of crystalline phosphorus nitride decomposition at 1100 K. Similarly, H 2 PN is considered unstable, and phosphorus nitride halogens like F 2 PN, Cl 2 PN, Br 2 PN, and I 2 PN oligomerise into cyclic polyphosphazenes.
The most ideal food was that which most closely matched the humour of human beings, i.e. moderately warm and moist. Food should preferably also be finely chopped, ground, pounded and strained to achieve a true mixture of all the ingredients. White wine was believed to be cooler than red and the same distinction was applied to red and white vinegar.
Berries have been valuable as a food source for humans since before the start of agriculture, and remain among the primary food sources of other primates. They were a seasonal staple for early hunter-gatherers for thousands of years, and wild berry gathering remains a popular activity in Europe and North America today. In time, humans learned ...
Many calcium compounds are used in food, as pharmaceuticals, and in medicine, among others. For example, calcium and phosphorus are supplemented in foods through the addition of calcium lactate, calcium diphosphate, and tricalcium phosphate. The last is also used as a polishing agent in toothpaste and in antacids.
Foods providing 20% or more of the DV are considered to be high sources of a nutrient, but foods providing lower percentages of the DV also contribute to a healthful diet. [ 21 ] The U.S. Department of Agriculture's (USDA's) FoodData Central lists the nutrient content of many foods and provides a comprehensive list of foods containing choline ...
Sake bottle, Japan, c. 1740 Sake barrel offerings at the Shinto shrine Tsurugaoka Hachiman-gū in Kamakura Sake, saké (酒, sake, / ˈ s ɑː k i, ˈ s æ k eɪ / SAH-kee, SAK-ay [4] [5]), or saki, [6] also referred to as Japanese rice wine, [7] is an alcoholic beverage of Japanese origin made by fermenting rice that has been polished to remove the bran.
Magnesium sulfate or magnesium sulphate is a chemical compound, a salt with the formula MgSO 4, consisting of magnesium cations Mg 2+ (20.19% by mass) and sulfate anions SO 2− 4.It is a white crystalline solid, soluble in water but not in ethanol.
The higher the associated electronegativity, the more an atom or a substituent group attracts electrons. Electronegativity serves as a simple way to quantitatively estimate the bond energy, and the sign and magnitude of a bond's chemical polarity, which characterizes a bond along the continuous scale from covalent to ionic bonding.