Răspuns :
n moli C6H6 m1 = 78n m1C = 12·6n
n moli C7H8 m2 = 92n m2C = 12·7n
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m amestec = 170n mC = 12·13n = 156n
%C = 156n·100/(170n) = 9176%
n moli C7H8 m2 = 92n m2C = 12·7n
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m amestec = 170n mC = 12·13n = 156n
%C = 156n·100/(170n) = 9176%