how many carbon atoms are present in lowest possible alkane which can exhibit enantiomerism?
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The smallest alkane which can show optical isomerism possesses 7 C atoms.
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Answer: Two secondary carbon atoms does methyl cyclopropane have.
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How many stereoisomers are possible for this aldopentose? There are 2 chiral carbons, so, 22, or 4 possible stereoisomers. This is a D isomer, since the OH on the chiral carbon furthest from the C=O is on the right.
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6.2), a chiral molecule, contains an asymmetric carbon atom; this is the carbon that bears the four different groups LCH3, LC2H5, LH, and LOH. In contrast, none of the carbons of ethanol, an achiral molecule, is asymmetric. A molecule that contains only one asymmetric carbon is chiral.
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The longest chain has seven C atoms, so we name this molecule as a heptane. We find two one-carbon substituents on the second C atom and a two-carbon substituent on the third C atom.
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Ethane is another example of a simple hydrocarbon. Ethane contains two carbon atoms and four hydrogen atoms. In chemistry we use a molecular formula to show how many atoms of each element are present in a molecule. A molecular formula however does not show the structure of the molecule.
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A chiral carbon is defined as a carbon atom which has 4 different atoms or groups of atoms attached to it which is also known as an asymmetric carbon. There are 4 chiral carbon atoms in the glucose molecule and also four chiral carbons are present in the fructose.
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['Methane. Methane is the lightest and most common hydrocarbon gas, consisting of one carbon molecule. ... ', 'Ethane. ... ', 'Propane. ... ', 'Butane. ... ', 'Pentane. ... ', 'Hexane.']
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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. Aromatic hydrocarbons contain ring structures with delocalized π electron systems.
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In the first member of ketone series there are three carbon atoms.
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An alkane is a fully saturated hydrocarbon, typically with no other major substituents or heteroatoms. An alkyl group indicates a functional group that is generally only composed of carbon and hydrogen. This group is part of an organic molecule that typically has multiple functionalities.
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Answer and Explanation: There is one mole of carbon atoms in a 0.500-mole sample of C2 H6.
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(a) Aldotetrose has two asymmetric carbon atoms. There are two pairs of enantiomers.
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['(1) As for the number of alkanes (CnH2n+2), Table 1, which is extracted from the data reported in S. ... ', "The number of alkanes (CnH2n+2) as constitutional isomers (structural isomers) and as steric isomers is calculated by Polya's theorem (G."]
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Glucose has four chiral carbons in its aldehyde form, and so there are 24, or 16 possible stereoisomers of this formula, only one of which is dextrose [(+)-glucose]. These 16 isomers are shown in Fig. 10-6.
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CHEBI:28817 - dodecane A straight-chain alkane with 12 carbon atoms.
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Cycloalkanes have one or more rings of carbon atoms. The simplest examples of this class consist of a single, unsubstituted carbon ring, and these form a homologous series similar to the unbranched alkanes. ... Hence the general formula for a cycloalkane composed of n carbons is CnH2n.