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Hexane (/ ˈ h ɛ k s eɪ n /) or n-hexane is an organic compound, a straight-chain alkane with six carbon atoms and the molecular formula C 6 H 14. [ 7 ] Hexane is a colorless liquid, odorless when pure, and with a boiling point of approximately 69 °C (156 °F).
Liquid properties Std enthalpy change of formation, Δ f H o liquid –198.7 kJ/mol Standard molar entropy, S o liquid: 295 J/(mol K) Enthalpy of combustion, Δ c H o –4163 kJ/mol Heat capacity, c p: 197.66 J/(mol K) Gas properties Std enthalpy change of formation, Δ f H o gas –167.2 kJ/mol Standard molar entropy, S o gas: 388.82 J/(mol K ...
Supercritical fluid: A fluid with properties intermediate of liquids and gasses. At sufficiently high temperatures and pressures, the distinction between liquid and gas disappears, resulting in supercritical fluids. Plasma: Unlike gases, which are composed of neutral atoms, plasma contains a significant number of free electrons and ionized atoms.
The vast majority of hydrocarbons found on Earth occur in crude oil, petroleum, coal, and natural gas. For thousands of years they have been exploited and used for a vast range of purposes. [12] Petroleum (lit. ' rock oil ') and coal are generally thought to be products of decomposition of organic matter. Coal, in contrast to petroleum, is ...
Forms of matter that are not composed of molecules and are organized by different forces can also be considered different states of matter. Superfluids (like Fermionic condensate) and the quark–gluon plasma are examples. In a chemical equation, the state of matter of the chemicals may be shown as (s) for solid, (l) for liquid, and (g) for gas.
Natural gasoline is a liquid hydrocarbon mixture condensed from natural gas, similar to common gasoline (petrol) derived from petroleum.. The chemical composition of natural gasoline is mostly five- and six-carbon alkanes (pentanes and hexanes) with smaller amounts of alkanes with longer chains. [1]
A Polycyclic aromatic hydrocarbon (PAH) is a class of organic compounds that is composed of multiple aromatic rings.Most are produced by the incomplete combustion of organic matter— by engine exhaust fumes, tobacco, incinerators, in roasted meats and cereals, [1] or when biomass burns at lower temperatures as in forest fires.
Drifting smoke particles indicate the movement of the surrounding gas.. Gas is one of the four fundamental states of matter.The others are solid, liquid, and plasma. [1] A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide).