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OpenStudy (anonymous):
Calculate the number of moles of Cl atoms in 1.81×1024 formula units of magnesium chloride, MgCl2.
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OpenStudy (cuanchi):
A) One mole of MgCl2 formula units you will have 6.02 x10^23 units formula, then if you divide the 1.81 x 10 ^24 by 6.02 x10^23 you will have the number of moles of MgCl2 formulas units. B) for each formula unit of MgCl2 you will have 2 moles of Cl then in 1.81 x 20^24 formulas. Then if you multiply the value calculate in A) by 2 you will get the number of moles of Cl atoms
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