BuyQualityEssays.com – ORDER 100% ANSWERED QUESTION…Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O. Show your work.

Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2•9H2O. Show your work.
mass of CaCl2•9H2O = 7.5 g
 
molar mass of CaCl2•9H2O = 110.98 + (9*18.01) = 273.07 g/mol
 
molar mass of CaCl2 = 110.98 g/md
 
mass % of CaCl2 in CaCl2•9H2O = (110.98/273.07) * 100 = 40.642%
 
mass of pure CaCl2 in 7.5 g of CaCl2•9H2O = (40.642/100) * 7.5 g = 3.05 g
 
7.5 g of CaCl2•9H2O contains 3 g of CaCl2
 
 
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