How many moles of #Cl# are in #1.2 * 10^24# formula units of magnesium chloride?

1 Answer
Al E. · Ernest Z.
Sep 4, 2017

#"4.0 mol"# of #"Cl"^-# ions.

Explanation:

Magnesium chloride is an ionic compound with an #"Mg"^(2+)# ion and two #"Cl"^-# ions in each formula unit. Thus:

#1.2*10^24 " formula units" * ("1 mol MgCl"_2)/(6.023*10^23 " formula units")*("2 mol Cl"^(-) " ions")/("1 mol MgCl"_2) = "2.0 mol Cl"^(-) " ions"#

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