Предмет: Химия, автор: olesjaaaa

напишите структурные формулы всех изомерных ароматических углеводородов состава С9Н12

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Автор ответа: Sany32

C6-H5-CH2 -CH2-CH3(ПРОПИЛБЕНЗОЛ

C6-H5(CH3) (C2H5) (1-МЕТИЛ 2-ЭТИЛБЕНЗОЛ

C6H5(CH3) (CH3 (CH3) (1,2,3,-ТРИМЕТИЛБЕНЗОЛ), МОЖНО ТАКЖЕ МЕНЯТЬ ЦИФРЫ , Н-Р, 2,4,6.

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Complete the sentences according to the teхt.

5.This was how Miklukho-Maclay met the first ... on the first day of his life in New Guinea.

6.Maclay heard the ... of men and women and the cries of children.

7.Maclay did not know ... of their language.

8. A native stood ... him.

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