Предмет: Химия, автор: masuna1997

составить уравнение реакции Cuo+C->CO2+Cu NaCl+F2->NaF+Cl2 FeCl2+Cl2->FeCl3 P2O5+H2O->H PO3 Fe+H2o->Fe3O4+H2 S+02->So2 NaNo3->NaNo2+O2

Ответы

Автор ответа: 9KaRiNkA
0

2Cuo+C->CO2+2Cu

2NaCl+F2->2NaF+Cl2

2FeCl2+Cl2=2FeCl3

P2O5+3H2O->2H3PO4

FeO + H2 = Fe + H2O

S+02->So2

2NaNo3->2NaNo2+O2

Похожие вопросы
Предмет: Английский язык, автор: grishalili
2. Поставь артикли a, the или (—).
1. We have got ____cake and ____ pie, _____ apples and _____ oranges on ____ table.
2. I like to drink ____juice, ____milk and ____mineral water.
3. He’s got ____ birthday party today, ____party is very funny.
Упражнение 3. Измени предложения.

Образец: Olga has got a flower. It’s her flower.
1. Misha has got a brother. .__________________________________
2. We have got a car. .__________________________________
3. My grandma has got a bag. .__________________________________
4. His grandpa has got a bike. .__________________________________
Упражнение 4. Составьте предложения
1. Are, in, the, my, pencils, bag.._________________________________________________________
2. Swimming, we, are, the, lake,in..____________________________________________________
3. The, are, at, school, pupils.._________________________________________________________
4. In, the, the, children, are, park.._________________________________________________________
5. Son, is, his, with, ball, the,playing..____________________________________________________
Упражнение 5. Подчеркни правильный вариант.
1. What / how is his name?
2. Where / why is she?
3. Where / who is sad?
4. Why / who are you happy?
5. When / what is the party?

Упражнение 6. Fill in the gaps. Use the words from the box.
am, is, are, have, has

Hi! My name (1) ______ Nick. I (2) _____ eight. I (3) _____ got a dad, a mum, a sister and a brother.
My mother (4) ____ a teacher. She (5) _____ got many pupils. They (6) _______my friends. My father
(7) ______a driver. Не (8) ______ got a new car. My brother (9) _____ not a pupil. He (10) ______
four. He (11) _______ got many toys.
My sister (12) ______not a pupil, either. She (13) _____ a student. She (14) _____ got many books. We
(15) ______ got a pet. It (16) _____ a kitten. His name (17) ___ Barsik. Barsik (18) _____ funny and
clever. The kitten (19) ______ got a mouse. The mouse (20) _____ grey.
Упражнение 7: Найдите ошибки
В этих предложениях допущены ошибки в употреблении форм притяжательного падежа.
Попробуйте найти их все.
1. Her nanny's name is Sarah.
2. The players's shirts.
3. My children's toys.
4. Martin and Anna' house.
5. Director' cut.