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iGCSE Chemistry Public

by Luka Clark

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iGCSE Chemistry

Course by Luka Clark, updated more than 1 year ago Contributors

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Moles

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Moles A quantity of atoms or molecules, used to calculate things in chemical reactions Why? In reactions the atoms have individual masses. Eg. NaCl 23 + 35 = 58. But still too small to weigh.v Avogadro number

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