1.

Calculate the mass percentage of benzene (C_6H_6)and carbon tetrachloride ("CCI"_4) if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.

Answer»

SOLUTION :Mass of solution = Mass of benzene + Mass of carbon tetrachloride = 22 g + 122 g = 144g
Mass PERCENTAGE of benzene = Mass of benzene /Mass of solutionx 100
`= (22g)/(144g) XX 100 = 15.28%`
Mass percentage of`"CCl"_4 = ("mass of CCl"_4)/("mass of solution") xx 100 = 122/144 xx 100 = 84.72%`


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