-
Из перечисленных вещест выбрать только алкены и написать их структурные формулы этанол,этилен,бутен,пентан,уксусная кислота,бензол,децен,декан
-
Предмет:
Химия -
Автор:
chucklestewt - 5 лет назад
-
Ответы 1
-
алкены:
этилен СH2=CH2
БУТЕН СH2=CH-CH2-CH3 (бутен-1)
децен CH2=CH-CH2-CH2-CH2-CH2-CH2-CH2-CH2-CH3 (децен-1)
-
Автор:
yadielmercer - 5 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
A: Let’s go _____ hot for our holidays.
B: But we can’t go _____; that’s too expensive.
A) everywhere / nowhere
B) somewhere / anywhere
C) anywhere / everywhere
D) anybody / someone
2. If you ____offered the part in the film at that time, you might be a star now.
A)were B)hadbeen C)- D)had
3. This is ___heavy luggage that I can’t carry it.
A)soa B)so C)such D)sucha
4. Khakim’s laziness caused him ___ .
A) failing B) to fail C) failed
5. Have you got _____ homework?
A) many B) much C) a few
6. We don’t need _____ eggs. Just half a dozen.
A) Needed you to B) Had you to write C) Did you have to D) Must you
11. She promised to pay the money back____ a year A) within B) for C) among D) by
12. He got acquainted with a very beautiful girl ____ he was on holiday
A) while B) since C) for D) during
13. They would listen to us, ____?
A) don’t they B) do we
C) would they D) wouldn't they
14. ____, aren’t I?
A) I’m your English teacher
B) You are my neighbor
C) I am not a pilot
D) He’s your English teacher
15. “Open the safe!” the raiders ordered the bank clerk. A) The raiders said the bank clerk opened the safe
B) The raiders ordered the bank clerk not to open the safe C) The raiders ordered the bank clerk to open the safe
D) The raiders asked the bank clerk if he opened the safe 16. He will never speak to me again if he ____out what’s happened.
A) finds B) will have found C) found D) would find
17. If you buy one T-shirt, you ____ the second one free. A) get B) would get C) will get D) will be got
18. Bradley passes over the ____on his way to school
A) road B) waterfall C) bridge D) farm
19. – can we meet on Wednesday evening ?
- Sorry, I’d love to but I ____basketball.
D) fail
D) some
A) a little B) many C) much
7. Is there _____ traffic in your town?
A) a few B) many C) some
8. The news from our trading partner was ___to report it to the top manager.
A) enough interesting
C) such interesting
9. The school ___students will win the competition is going to get a television.
A) who B) which C) its D) whose
10. ___write with your left hand when you broke your arm?-
Предмет:
Английский язык -
Автор:
valencia - 5 лет назад
-
Ответов:
1 -
Смотреть
-
-
Таблиця 13. РІЗНОМАНІТНІСТЬ ЖИВЛЕННЯ ТВАРИН
Видова назва Спосіб живлення Систематична належність
Рака річкового.. Голуб ..Сисунпичинковий ..Їжак..Ласка звичайн..сарна...сова..жук -
Помогите решить задания пожалуйста срочно. В первом задании слова уголёк-Уголёк
-
Предмет:
Русский язык -
Автор:
Álvaroyobv - 5 лет назад
-
Ответов:
3 -
Смотреть
-
-
34балла!!!Как вы думаете , почему европейские колонизаторы,являясь в странах азии и африки меньшинством,смогли не только укрепиться и овладеть большинством стран этих регионов, но и не смотря на сопротивление народа сохранили свое государствов течении всех XIX в. ? СРОЧНО!!!!
-
Предмет:
История -
Автор:
lucapowers - 5 лет назад
-
Ответов:
3 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35898 -
Askold
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
754
How much to ban the user?
1 hour
1 day
100 years