how many atoms of carbon are present in 34.2g of sucrose?
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A molecule of sucrose (C12H22O11) has 12 carbon atoms, 22 hydrogen atoms and 11 oxygen atoms.
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Because Carbon's Molar Mass is about 12 grams (the actual number is 12.011, which isn't a large enough difference to have an especially relevant effect), this means we have 2 moles of Carbon. In one mole of atoms, there are 6.02*10^23 atoms.
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It's the way these atoms are connected that makes each type of carbohydrate different. In each molecule of table sugar there are: 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms.
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Answer. 45 atoms in total are present in 1kg of sugar .
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Answer. There are 6 carbon atoms/molecule of glucose. Avogadro's constant (6.02 * 10^23) represents the number of atoms/molecules in a mole (atoms if it is a pure substance).
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Molar Mass (g/mol) One mole of carbon still has 6.022 × 1023 carbon atoms, but 98.89% of those atoms are carbon-12, 1.11% are carbon-13, and a trace (about 1 atom in 1012) are carbon-14.
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There are 2.11 x 1024 molecules of sucrose in 3.50 moles.
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So 1 mole of glucose weighs 180g. There are 6.02 x 1023 particles in a mole so 180 g of glucose must contain 6 x 6.02 x 1023 carbon atoms. This equals 3.61 x 1024 carbon atoms. So 5g glucose contains 2 x 1022 x 5 = 1023 carbon atoms.
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Glucose is made of six carbon atoms, six oxygen atoms, and twelve hydrogen atoms. When the plant makes the glucose molecule, it gets the carbon and oxygen atoms it needs from carbon dioxide, which it takes from the air.
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1 molecule of glucose contains 6 atoms of C, 12 atoms of H, and 6 atoms of O • 1 mole of glucose contains 6 moles of C atoms, 12 moles of H atoms, and 6 moles of O atoms. 10 moles of glucose contains 60 moles of C, 120 moles of H, and 60 moles of O atoms.
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1.00mol of carbon-12 atoms has a mass of 12.0g and contains 6.022×1023 atoms.
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Since there are 6 moles of carbon in 1 mole of glucose then the number of moles of carbon is equal to 0.10 moles of glucose times 6 moles of carbon. The simplified answer is 0.60 moles of carbon in 18 g of glucose.
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Problem 3 - What fraction of all the maltose atoms are carbon? Answer: The total number of atoms is 12 + 22 + 11 = 45, so carbon atoms are 12/45 of the total.
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1 mole of carbon-12 has 6.02 x 10^23atoms. And one mole of anything is the same number of grams as the molecular mass. so, There are (1/12.0)moles with each mole having 6.022 x10^23 atoms.
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Moles of sucrose=454⋅g342.30⋅g⋅mol−1=1.33⋅mol . Now it is a fact that in a mole of stuff there are 6.022×1023 individual items of stuff......... So 1.33⋅mol×6.022×1023⋅mol−1≅8×1023 individual sucrose molecules.
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Carbon atoms 1 and 6 have only three different substituents on them. Thus, there are four chiral carbon atoms in the glucose molecule.
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This means that 100.00 g of sucrose always contains 42.11 g of carbon, 6.48 g of hydrogen, and 51.41 g of oxygen. First the molecular formula of sucrose (C12H22O11) is used to calculate the mass percentage of the component elements; the mass percentage can then be used to determine an empirical formula.