Question

A 100 ml solution contains 4.7g MgCI (MM=94).The density of the solution is 1.03g/ml.Express the consentration of the solution in: a) % by mass

Answer 1

Answer on Question #49142, Chemistry, Other

Question: A 100 ml solution contains 4.7g MgCl (MM=94). The density of the solution is 1.03g/ml. Express the concentration of the solution in: a) % by mass

Answer: The mass of the solution is 100ml*1.03g/ml = 103g. If 103g of solution contains 4.7g of MgCl2 then the mass of MgCl2 in 100g of solution will be (100*4.7)/103 = 4.56g.

So, the % of MgCl2 by mass is 4.56%.

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