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21-11-2016
Chemistry

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What is the mass of 8.90 moles of magnesium chloride, MgCl2?

Express your answer numerically in grams.

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Ambergal Ambergal

21-11-2016

mass = mol x Mr
= 8.90 x (24.3 + (2)(35.5))
= 848.17g

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Аноним Аноним

21-11-2016

Moles= weight of the given compound /molecular mass of that compound. Therefore Weight of MgCl2= moles of MgCl2 x molecular mass of MgCl2 = 8.90 moles x (molecular weight of Mg+ 2 x molecular weight of Cl) = 8.90 x (24 + 2x 35.5) ~ 845. 5gm.

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