Definition The mole (symbol: mol) is the SI unit of quantity of substance. One mole of a substance contains exactly 6.022 140 76 × 1023 elementary units, for example, atoms, molecules, or ions. This number is called the Avogadro number: 6,022 140 76 × 1023. The Avogadro constant (Avogadro constant) NA, on the other hand, … Mol (Amount of Substance)
Definition Molecules are defined chemical compounds in which at least two, but usually more, atoms are covalently bonded together. Typical atoms in molecules are nonmetals such as carbon (C), hydrogen (H), oxygen (O), nitrogen (N), sulfur (S), phosphorus (P), and halogens (fluorine (F), chlorine (Cl), bromine (I), iodine (I)). Organic compounds contain carbon atoms. The … Molecules
Definition Alkanes are organic compounds composed exclusively of carbon and hydrogen atoms. They belong to the hydrocarbons and contain only C-C and C-H bonds. Alkanes are not aromatic and saturated. They are referred to as aliphatic compounds. The general formula of acyclic alkanes is C n H 2n+2 . The simplest alkanes are the linear … Alkanes
Definition Alkenes are organic compounds which contain double bonds between carbon atoms (C=C). Alkenes are hydrocarbons, meaning that they consist exclusively of carbon and hydrogen atoms. They are also called unsaturated compounds. This is in contrast to the saturated ones, which contain only single bonds (C-C). Alkenes can be linear (acyclic) or cyclic. Cycloalkenes are, … Alkenes
Products Pure kerosenes are available in pharmacopoeia quality in pharmacies and drugstores. They are also found in creams, ointments, pastes, body lotions, baths, eye drops, cosmetics, gauzes and emulsions for ingestion, among other products. Kerosenes are also known as mineral oils and have been used medicinally since the 19th century. Structure and properties The pharmacopoeia … Kerosenes
Products Pure monosaccharides are available in specialty stores, such as pharmacies and drugstores. The best-known monosaccharides include glucose (grape sugar), fructose (fruit sugar) and galactose (mucilage sugar). Structure and properties Monosaccharides are the simplest carbohydrates (“sugars”), consisting of carbon (C), hydrogen (H), and oxygen (O) atoms. The organic compounds have the general formula Cn(H2O)n. There … Monosaccharides