where p is gas pressure, V is volume, is the number of moles, R is the universal gas constant (= 8.3144 j/(oK mole)), and T is the absolute temperature. The first law of thermodynamics, the conservation of energy, may be written in differential form as. dq = du + p dV.
Definition of DIAMOND for Kids. 1. : a very hard mineral that is a form of carbon, is usually nearly colorless, and is used especially in jewelry. 2. : a flat figure {loz} like one of the surfaces of certain cut diamonds.
Diamond is a rare, naturally-occurring mineral composed of carbon. Each carbon atom in a diamond is surrounded by four other carbon atoms and connected to them by strong covalent bonds.This simple, uniform, tightly-bonded arrangement yields one of the most durable substances known.em diamonds are stones with color and clarity that make them suitable for jewelry or investment use. These stones are especially rare and make up a minor portion of worldwide diamond production. Gemstone diamonds are sold for their beauty and quality.