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Calculate the molar mass
CaCl2
Ca(NO3)2
Ca(OH)2
CaSO4
BaCl2
on the periodic table it shows the molecular weight of all the elements and what you do is add all the numbers together: CaCl2=40.08+35.45x2=110.98g/mol *Ca(NO3)2=40.08+14.01x2+16x6=164.1g/mol *Ca(OH)2=40.08+16x2+1.008x2=74.096g/mol CaSO4=40.08+32.06+16x4=136.14g/mol BaCl2=137.33+35.45x2=208.23g/mol *these 2 require you to distribute the 2 into each of the elements.
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