Предмет: Геометрия, автор: violetta14zai

ступени акислення CO

Ответы

Автор ответа: leilaibragimova0512

0

C(+2)O(-2) у углерода с.о +2 а у кислорода-2

Предыдущий вопрос

Следующий вопрос

Интересные вопросы

Предмет: Алгебра, автор: gruouti

Розв'яжіть рівняння.

2 года назад

Предмет: Английский язык, автор: ek1makarek1

!!ПОМОГИТЕ ПОЖАЛУЙСТА! СРОЧНО !!!
I . Grammar.
Choose the correct answer.
1. As our school canteen ________ I don’t have lunch at school
a) is being repaired
b) being repaired
c) was being repaired
2. I am glad that I _________ by this teacher
a) taught
b) am taught
c) am teached
3. How ________ one travel alone, I wonder
a) must
b) can
c) need
4. You ________ tell it to me hundred times, dad I am a grown-up person
a) must
b) needn’t
c) need
5. It is a secret. You ________ tell it to anyone
a) needn’t
b) should
c) shouldn’t
6. The sky is too grey. It ________ rain all day.
a) must be
b) may
c) can be
7. _________ you send me some money, please?
a) should
b) need
c) could
8. My uncle had a heart attack I _________ to call the Doctor.
a) had to
b) needn’t
c) should
9. It _________ immediately, hurry up!
a) can be done
b) must be done
c) could be done
10. The exercise ________ in writing
a) can do
b) can be done
c) could do

II. Vocabulary
Choose the correct answer.

1. Hi, Jack. Can you give me a ________? I’ve missed my bus!
a) ride
b) lift
c) driver
2. I’ve never thought that a hitch-hiker can ________ the driver.
a) rob
b) thief
c) murderer
3. ________ of hiking alone don’t frighten me
a) dangerous
b) dangers
c) danger
4. In some shops you needn’t pay by _________
a) visa
b) credit
c) cash
5. Never had a better holiday! It was _______!
a) terrible
b) terrific
c) boring
6. A good tent, a nice site and nice weather will make your holiday unforgettable
a) Camping
b) Package
c) Tenting
7. I don’t like travelling with many suitcase, bags. I prefer travelling _____________
a) light
b) lightly
c) alone
8. There are __________ museums in our city open to tourists
a) vary
b) various
c) differ
9. When I was in Turkey. I was homesick I ________ my family and friends
a) Lost
b) Lacked
c) Missed
10. The ________ of living in this country goes up.
a) price
b) cost
c) amount

2 года назад

Предмет: Математика, автор: zenitka3310

2. Стороны основания прямого параллеле- пипеда равны 3 см и 5 см, а угол между ними 30°. Найти объем параллелепипеда, если его высота 6 см.

2 года назад

Предмет: Литература, автор: patimat17

почему Мцыри свою жизнь в монастыре называется жизнью в плену

9 лет назад

Предмет: Математика, автор: макс2238

помогите пожалуйста с 1 задачей

9 лет назад