Предмет: Химия, автор: Настенькаlovelove

1 Fe^2Oз+HCI=>
2.Mg+HCI=>
3.AgN0з+CI=>
4.CaCL2+Nacoз=>

Ответы

Автор ответа: alberto00

0

Fe2O3 + 6HCl = 2FeCl3 + 3H2O

Mg+2HCl = MgCl2 + H2

AgNO3 + Cl = AgCl (осадок) + NO3 в этом не уверен

CaCl2 + Na2CO3= CaCO3+2NaCl

Автор ответа: дарина060500

0

1)Fe2O3 + 6HCl ⇒ 2FeCl3 + 3H2O
2)Mg+2HCl ⇒ MgCl2 + H2
3)AgNO3 + Cl ⇒ AgC + NO3
4)CaCl2 + Na2CO3 ⇒ CaCO3+2NaCl

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Физика, автор: NatashaSoup

сколько витков имеет вторичная обмотка трансформатора если в первичной обмотке 20 витков, а коэффициент трансформации равен 4?

7 лет назад

Предмет: Английский язык, автор: nurylestgo

ПОМОГИТЕЕЕЕЕЕЕЕ
1. Choose the verb in Past Simple Tense.
I .... a sweet dream last night.
A. Have
B. Has
C. Had
D. Having
E. Will have

2. Choose the verb in Past Simple Tense
He .... from Harvard last year.
A. Graduate
B. Graduates
C. Graduated
D. Graduating
E. Will graduate
3. Choose the negative form of the verb in Past Simple Tense
They .... to the Black Sea last year.
A. didn't go
B. didn't went
C. didn't gone
D. don’t go
E. doesn’t go
4. Choose the appropriate verb form in Present Continuous Tense
Where is Ann? She .... in the kitchen.
A. am cooking
B. is cooking
C. are cooking
D. cooks
E. is cook
5. Choose the appropriate verb form in Present Continuous Tense
Listen! The baby .... now.
A. is crying
B. are crying
C. crying
D. cry
E. cried
6. Choose the correct word
Is there ... cheese?
A. Some
B. A
C. Any
D. No
E. -
7. Choose the correct word
Would you like… coffee?
A. -
B. A
C. Any
D. No
E. Some
8. Choose the correct word
I didn`t buy ...milk yesterday.
A. -
B. A
C. Some
D. Any
E. No
9. Choose the correct word
I … ride a bicycle when I was 10.
A. Can
B. Could
C. Can’t
D. Cannot
E. None

10. Complete the sentence
My brother is … and … than me.
A. Older, stronger
B. More older, more strong
C. More old, more strong
D. Older, more stronger
E. More old, strong

11. Complete the sentence
My mother is … than my father.
A. Serious
B. More serious
C. The most serious
D. Seriouser
E. The seriosest

12. Complete the sentence
He reads … than this girl.
A. Bader
B. More bad
C. Worse
D. More worse
E. bad

13. Choose the correct question in Past Simple Tense
A. Where do you go on holiday last year?
B. Where does you go on holiday last year?
C. Where you went on holiday last year?
D. Where did you go on holiday last year?
E. Where did you went on holiday last year?

14. Choose the correct question in Past Simple Tense
A. Who was your best friend in your childhood?
B. Who were your best friend in your childhood?
C. Who is your best friend in your childhood?
D. Who are your best friend in your childhood?
E. Who did your best friend in your childhood?

15. Choose the correct adjective?
Did you like the film? – No, I didn’t. It was …
A. Interesting
B. Interested
C. Bored
D. Boring
E. -

16. Complete the sentence.
… a lot of good students in this class.
A. Is there
B. There is
C. There isn’t
D. Are there
E. There are

17. Choose the correct preposition
My mother often comes home … 7 o’clock … Friday.
A. in, on
B. in, into
C. at, on
D. out, of
E. on, at

18. Choose the correct option «127»
A. one hundred twenty-seven
B. one thousand and twenty-seven
C. one hundred and twenty-eight
D. one hundred and twenty-seven
E. one hundred and twentieth

19. Choose the correct option
May 2 1985
A. May the second, nineteen eighty-six
B. May the twoth, nineteen eighty-five
C. May the second, nineteen eighty-five
D. May the two, nineteen eighty-five
E. May the second, nineteen seventy-five

20. Choose the antonym for the word Famous
A. Well-known
B. Unknown
C. Charming
D. Attractive
E. Popular

7 лет назад

Предмет: Математика, автор: Аноним

726. Выполни дейтсвия 2 1/2*(2/15-3 5/6)-2 3/4

7 лет назад

Предмет: Математика, автор: ashura1984

Помогите решить задачу. Во вторник еж принес на 3 гриба больше ,чем в среду, и на 2 гриба больше , чем в четверг. В какой день ,в среду или четверг ,еж принес больше грибов?

10 лет назад

Предмет: Геометрия, автор: KobraJa1967

Как с помощью трёх разрезов разделить круглый торт на семь частей?

10 лет назад