how many moles of molecules are there in 38g of fluorine f2?
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Molar mass of F2 is 38 g. How many atoms are present in 0.147 mole of F2? One molecule of F2 contains 2 atoms of fluorine. So, 0.147 moles will contain 0.147 X 2 X 6.023 X 1023 = 1.76 X 1023 atoms of flourine.
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64 gm of Oxygen comprises of 3.556 moles. One mole of any substance has 6.022140857×10^23 molecules.
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one mole is 6.02⋅1023 molecules. there are 5.117⋅1021 molecules present in 1.53g of C6H12O6 , glucose.
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Now, in two moles of H2, 12.044 × 10^(23) molecules are present and in 1 molecule of H2, two H atoms are present.
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4 grams (2 moles) of hydrogen molecules contains 4 moles of hydrogen atoms.
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1 Answer. Stefan V. That many sulfur hexafluoride, or SF6 , molecules are equivalent to 0.00425 moles. You know that 1 mole of any compound contains 6.022⋅1023 molecules of that compound - this is known as Avogadro's number.
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Avogadro's number shows us that there are 6.022 x 10^23 molecules of CO2 in 1 mole of the gas. Therefore, there are 6.022 x 10^23 atoms of carbon and 12.044 x 10^23 atoms of oxygen in that 1 mole of CO2.
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One mole of oxygen contains 6.022 × 1023 molecules. 1.20 × 1022 molecules of oxygen contain = 1.20 × 1022 / 6.022 × 1023 = 0.01099 moles.
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How many atoms are present in 0.147 mole of F2? One molecule of F2 contains 2 atoms of fluorine. So, 0.147 moles will contain 0.147 X 2 X 6.023 X 1023 = 1.76 X 1023 atoms of flourine.
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In other words, 1 mole of atoms is 6.02×1023 atoms. 1 mole of molecules is 6.02×1023 molecules.
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One mole of anything has 6.02 x 10^23 molecules. That would mean 3.0 moles of CO2 have 6.02 x 10^23 times 3.0. So that would be 1.8 x 10^24 molecules in 3.0 moles of C02.
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Answer. 3.0115*10^23 molecules contain=2*3.0115*10^23=6.023 * 10^23 atoms!
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6 x (Avogadro's number) which you better damn well have committed to memory if you are learning chemistry. A mole of matter is 6.022*10^23 molecules. And there are 3 atoms in a CO2 molecule (one carbon atom and two oxygen atoms).
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32 g of oxygen is two moles of oxygen atoms. That's approximately 2 x 6 ^23 oxygen atoms.
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1 mole of carbon-12 has 6.02 x 1023 atoms. Second, you need to know how many moles there are in 20 grams of carbon-12. One mole of anything is the same number of grams as the molecular mass. Since the molecular mass of carbon-12 is 12, there are 12 grams in 1 mole of it, and therefore 20/12 = 5/3 moles in 20 grams.
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One mole of U238 ( 6.022 X 10^23 atoms) is 238 grams; one mole of U235 is 235 grams.
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Number of molecules = 1.47 × 10^(23) molecules. Thus, there are 1.47 × 10^(23) molecules present in 122 grams of NO2.