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Nguyen Van Thanh · Answer 1 · 2017-09-27T20:04:53+0000

formula units??? im assuming moles
if its how many moles of mgcl2 in 29.2g of mgcl2
to find moles: Mass / RFM = 29.2/95 = 0.307mol

if its the number of atoms: Moles x Avogadro contestant
0.307 x 6.02x10+23

hope that helps

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