are alkanes gases at room temperature?
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The alkanes can exist as gases, liquids, or solids at room temperature. The unbranched alkanes methane, ethane, propane, and butane are gases; pentane through hexadecane are liquids; the homologues larger than hexadecane are solids. ... Solid alkanes are normally soft, with low melting points.
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The alkanes are saturated hydrocarbons—that is, hydrocarbons that contain only single bonds. Alkenes contain one or more carbon-carbon double bonds. Alkynes contain one or more carbon-carbon triple bonds.
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The noble gases of Group 8A (He, Ne, Ar, Kr, Xe, and Rn) are all gases at room temperature (as the name of the group implies); since they are all unreactive, monatomic elements, their boiling points are extremely low.
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Compounds with covalent bonds may be solid, liquid or gas at room temperature depending on the number of atoms in the compound. The more atoms in each molecule, the higher a compound's melting and boiling temperature will be. ... Low enthalpies of fusion and vaporization.
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Oil is a liquid, but propane is a gas. Liquids are fluid, like water, but gases seem to have no visible appearance, like air. Gas is a general term for air-like substances, but there are specific gases that can be ignited and used for heating. You can choose between natural gas and propane for your home heating system.
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Boiling points Methanal is a gas (boiling point -21°C), and ethanal has a boiling point of +21°C. That means that ethanal boils at close to room temperature. The other aldehydes and the ketones are liquids, with boiling points rising as the molecules get bigger.
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Only 1 in 109(a billion) molecules are ionize at room temperature. At equilibrium at room temperature, the rate of forward reaction and the backward reaction is extremely fast and hence no water molecule practically remain ionized. Therefore roughly one in a billion water molecule is ionized at a given instant.
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Hydrocarbons are organic compounds containing only carbon and hydrogen. They include alkanes, alkenes, alkynes and aromatics. ... Alkanes are not usually considered as functional groups; instead, an alkane is a compound that lacks functional groups. The functional group in an alkene is a carbon-carbon double bond.
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-Distances between molecules of gas are very large compared to bond distances within molecules. ... -All gases are colorless and odorless at room temperature. -Gases expand spontaneously to fill the container they are placed in. All gases are colorless and odorless at room temperature.
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It exists as a gas at standard temperature and pressure. Octane is a much larger molecule with a molecular weight of 114 g/mol. It exists as a liquid at standard temperature and pressure. All gasses at room temperature and atmospheric pressure are comprised of small molecular weight molecules.
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['colourless gas at room temperature and pressure ⚛ Melting point = -169°C. ⚛ Boiling point = -104°C.', 'slightly sweet smell.', 'flammable.', 'non-polar molecule ⚛ soluble in non-polar solvents. ... ', 'reactive: the active site is the double bond For example, ethene readily undergoes addition reactions.']
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Trans fats are semi-solid at room temperature owing the position of one (or more) of its chemical bonds being in the "trans-" rather than the "cis-" position. There are two types of trans fats: natural and artificial. Artificial trans fats start off as vegetable oils, which are liquid at room temperature.
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Covalent compounds are usually gaseous molecules at room temperature and pressure. They might also be liquids with low relatively low boiling points.
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The alkanes are named as methane, ethane, propane, butane, pentane, hexane, heptane and octane. The general formula for the alkanes is CnH2n+2. A homologous series is a set of compounds with the same general formula, similar chemical properties and gradual changing physical properties.
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Those molecules that are usually solid at room temperature (plant or animal) are termed fats, while those that are liquids at room temperature are termed oils.
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You can calculate how many molecules there are in a room, (4m x 3m x 3m = 24 m3) giving about 5 x 1026 molecules. This is in fact an estimate of the Avogadro number for a kilo-mole. A kilogram mole of any gas contains 6 x 1026molecules.
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Organic compounds can be gases, liquids, or solids at room temperature. Ionic compounds are all solids at room temperature with very high melting points. Organic compounds have relatively low melting points and boiling points.