how many chiral carbon atoms are in this molecule?
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There are four chiral carbon atoms in the open-chain form of glucose.
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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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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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In each molecule of ethanol there are two carbon atoms. This also means that for each mole of ethanol there are two moles of carbon.
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Carbon forms 4 bonds with other atoms. Please note that carbon need not always form bonds to four atoms. A carbon could form a double bond with an oxygen and then two single bonds to hydrogen atoms. The carbon is only bonded to three atoms, but is forming a total of four bonds (1 double and 2 singles).
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Carbon ( Cstart text, C, end text), as a group 14 element, has four electrons in its outer shell. Carbon typically shares electrons to achieve a complete valence shell, forming bonds with multiple other atoms.
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If it's elemental carbon molecule, they're can be four atoms in a molecule. If it's graphite or diamond, they are large carbon chains.
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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].
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One mole of the glucose molecule (C6H12O6) would yield six moles of carbons atoms, due to there being six of them per molecule. Multiply the moles of glucose present, 0.1 moles in this case, by the number of carbon atoms per molecule, six, to get 0.6 moles of carbon, which translates into about 3.61×10^23 carbon atoms.
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In each mole of ibuprofen there are 13 atoms of carbon. Multiply 0.0791 moles by 13 atoms C/mol to get the number of carbon atoms. There are about 1.03 atoms of C. Use Avogadro's number to find the number of moles (there are 6.022 x 10^23 atoms/mole) of carbon.
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The exact relationship is m = 2n where m is the number of possible isomers and n is the number of chiral centers. Thus, for molecules with two chiral centers there are maximum of four possible stereoisomers. (Molecules with more than two chiral centers will not be considered here.)
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In a single molecule of C2H5OH, there are 9 atoms. 2 carbon atoms, 5 hydrogen atoms, an oxygen, and a hydrogen (the hydrogen-oxygen bond is very common in organic chemicals).
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There are six oxygen atoms in three CO2 molecules and four oxygen atoms in four H2O molecules. To balance the 10 oxygen atoms in the products of this reaction we need five O2 molecules among the reactants. There are now three carbon atoms, eight hydrogen atoms, and 10 oxygen atoms on each side of the equation.
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There are no internal mirror planes, so every carbon atom is different. The four chiral centres (with their attached groups) are: C2 (OH,C1, C3, H) C3 (OH, C2, C4, H)
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Atomic carbon has six electrons: two inner shell (core) electrons in the 1s orbital, and four valence (outer most shell) electrons in the 2s and 2p orbitals.
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A dozen CO2 molecules have one dozen carbon atoms and two dozen oxygen atoms. A million CO2 molecules have one million carbon atoms and two million oxygen atoms. A mole of CO2 molecules (we usually just say “a mole of CO2”) has one mole of carbon atoms and two moles of oxygen atoms.
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There are 5. There is 1 carbon, and 4 chlorine atoms (or chloride ions if you want to get technical).