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How many moles of #MgI_2# will you have if you have 345.0 g of it?

1 Answer

Jul 4, 2016

A bit over #1# #mol#.

Explanation:

#"Number of moles"# #=# #"Mass"/"Molar Mass"#

#=# #(345.0*g)/(278.11*g*mol^-1)# #=# #??mol#.

How may moles of iodine does this represent? Why?

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