how many atoms are in a mole of sodium?
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Then, multiply the number of moles of Na by the conversion factor 6.02214179×1023 atoms Na/ 1 mol Na, with 6.02214179×1023 atoms being the number of atoms in one mole of Na (Avogadro's constant), which then allows the cancelation of moles, leaving the number of atoms of Na.
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One mole of a substance is defined by Avogadro as consisting of 6.022 x 1023 atoms.
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The Mole Unit 1 - Activity 2. So, one mole of NaCl weighs 58.5g. Let's think about this a bit further: 58.5g of NaCl will contain one mole of sodium ions and one mole of chloride ions.
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1 mole = 6.022 x 10^23 atoms or molecules or formula units of that substance. Calculation of mole from number of particles and vice – versa. Here, 2 moles of N2 molecules will have 2x2 moles of N atoms or particles. So, 4 mole of N atoms = 4 x 6.022 x 10^23 atoms of Nitogen.
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In order to work this out, multiply Avogadro's number - the one I stated at the start of this explanation - by 2 . This will give you the number of molecules in 2 moles of a substance. 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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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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2.5×10^15/6.02×10^23 = 4,2×10^-9 moles of sodium, a very small amount, unmeasurable with precision I would say.
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So... for the element of SODIUM, you already know that the atomic number tells you the number of electrons. That means there are 11 electrons in a sodium atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and only one in shell three.
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1 Answer. You use the fact that 1 mole of any substance contains exactly 6.022⋅1023 atoms or molecules of that substance - this is known as Avogadro's number. In your case, 1 mole of gold will have exactly 6.022⋅1023 atoms of gold.
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1mol contain 6.023*10^23 atoms. so 4.25 moles contain 4.25*6.023*10^23 atoms. so the answer is 2.56*10^24 atoms. thank you.
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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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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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A mole is equal to 6.022 X 1023 atoms or molecules, whichever is the primary unit used to create the mole.
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A mol of NaCl would also be a 6.022 x 1023 molecules of NaCl. The relationship between moles and mass is known as molar mass or the number of grams in one mole of a substance.
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One mole of lithium (Li) is equal to 6.022 X 1023 atoms of lithium.
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mass Na atom = 22.99 g Na/mole x 1 mole/6.023 x 1023 atoms = 3.817 x 10-23 g.
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Each NaOH has one Na and one O and one H. Therefore, 2 NaOH has 6 atoms.