how many atoms are in 2 moles of sodium?
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1 Answer. There are 1.20⋅1024 atoms of sodium in 2 moles of sodium.
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Answer. There are 10 electrons present in Na+. The atom of sodium has 11 electrons, 11 protons along with 12 neutrons, but Na+ contains one less electron, 11 protons along with 12 neutrons, as the ion has lost 1 electron.
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If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams. Since we only have 0.001 grams, that means that we have NA * (0.001/18) = 3.35*1019 molecules of water!
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In one molecule of sodium sulfate, or Na2 SO4 there are seven atoms in all. The chemical formula for this molecule tells us this.
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Fraction of a mole * Atomic weight = weight or mass you have To start, you need know that all a mole means is you have 6.022 x 1023 atoms of that type. So if I tell you I have a mole of nitrogen, then I have 6.022 x1023 nitrogen atoms. That ugly number is called Avogadro's Constant, NA.
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It is equal to Avogadro's number (NA), namely 6.022 x1023. If we have one mole of water, then we know that it will have a mass of 2 grams (for 2 moles of H atoms) + 16 grams (for one mole O atom) = 18 grams. Since we only have 0.001 grams, that means that we have NA * (0.001/18) = 3.35*1019 molecules of water!
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One mole of atoms is 6.022×10^23 atoms. The molar mass of Na is 22.989 g/mol. To calculate atoms from moles, multiply given moles by 6.022×10^23 atoms/mol.
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How many atoms are in 6.2 moles of aluminum? I mol = 6.02X1023 atoms so 6.2 mol = 6.2x (6.02x1025) = 3.73 x1024 atoms of Al.
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There are 45.165 X 1023 atoms in 2.5 moles of SO2. We reach this conclusion by using Avogadro's number, which is the number of fundamental units in a...
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Mass number We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons.
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Multiply the number of moles by 6.022×10^23 atoms/mole. There are ~1.807×10^24 atoms in one mole of SO2.
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We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu.
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We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass).
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Since 1 molecule contains 1 atom each of Na and Cl, 1 mole of NaCl will contain 1 mole each of Na and Cl. We know that 1 mole of anything contains an Avogadro's number of atoms or 6.023 x 10^23 atoms. Thus, 1 mole of NaCl will contain 6.023 x 10^23 atoms each of Na and Cl, or a total of 12.046 x 10^23 atoms.
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So 1 mole of NaCl weighs 58.5g. So now we need to convert grams into moles by dividing mass in grams by the mass of 1 mole. This means that in 1dm3 of solution there must be 1 mole of sodium ions. The number of particles in 1 mole is given by the Avogadro Constant which is equal to 6.02x1023mol−1 .
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How many oxygen atoms would there be in 100.0 grams of sodium acetate? Moles of sodium acetate is 100g x (1 mol Sodium Acetate/82.034g) = 1.219 mol. Moles of oxygen is 2 x 1.219mol = 2.438 mol of O. Finally, 2.438 mol x (6.02 x 10 /mol) = 1.47 x 10 oxygen atoms.
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The mole is represented by Avogadro's number, which is 6.022×1023 atoms or molecules per mol.