скорость какой реакции наибольшая?......Li+H2O...Na+H2O...K+H2O....Ca+H2O....Rb+H2O..

Назовите соединения, формулы которых:

А) CH3-CH-CH3
             |
           CH3

Б) CH3-CH-CH-CH2-CH3
            |    |
         CH3 CH2-CH3

B)   C3H CH3
        |   |
CH3-C-CH-CH3
       |
      CH3

Г)   CH3

       |

CH3-C-CH-CH2-CH3

       |    |

     H3C CH3

Д) CH3-CH2-CH2-CH-CH3

                            |

                           CH3

Е) H3C CH3

        | |

CH3-C-C-CH3

        | |

   C3H  CH3

Из веществ, формулы которых приведены выше, выберете: 1) изомеры 2) гомологи

Что вы знаете о религиозных верованиях первобытных людей?

Древнегреческий историк Геродот назвал Египед даром Нила.Прав ли был Геродот?

1. Составте вопросы используя am,is are?

1) what colour your house? - what colour is your house? (пример)

2) where my key?

3) where my trousers?

4) how old your grandmother?

5) what colour his hair?

6) i low much these shoes?

7) who your favourite actor?

8) why you always late?

2. Вставте am, is are was или were

1) last year their son was, so he is 27 now (пример)

2) today the weather ... nice, but yesterday it ... old.

3) i ... cold. Can i have something hot to drink?

4) i ... hungry last night, so i had something to eat.

5) where ... you at 10 o'clock last Sunday morning?

6) don't bay those shoes. They ... too expensive.

7) why ... you so tired yesterday?

8) we must go now. It ... very late.

9) this time last year i ... in england.

10) we ... tired whem we arrived home, so we went to bed.

11) anton chekhov died in 1904. he ... afomous russian writer.

12) "where ... the dogs?" "I don't know. They ... in the garden ten minuets ago"

С подробными объяснениями +,+