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    Can someone help me on the chemistry sheet: C3.8d Moles in life?

    A sample of magnesium bromide (MgBr2) weighs 46g. How many moles of magnesium ions and bromide ions are in the sample?

    first you work out how many moles of the total substance there is and then you multiply it by the number of specific ions in the molecule, in this case 1 magnesium and 2 bromides. so there are 0.25 moles of MgBr2 and therefore 0.25 moles of Mg+ and 0.5 moles of Br-
“Yanny” or “Laurel”
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