Предмет: Химия, автор: karolina1453

осуществить превращение Zn-ZnCl2-Zn(OH)2-Zn(No3)2-ZnSO4 Помогите пожалуйста!!!!!

Ответы

Автор ответа: svetka1574

1

1) Zn + Cl2 = ZnCl2

2) ZnCl2 + 2NaOH = Zn(OH)2 + 2NaCl

3) Zn(OH)2 + 2HNO3 = Zn(NO3)2 + 2H2O

4) Zn(NO3)2 + Na2SO4 = ZnSO4 + 2NaNO3

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: igorgrigoryev09

Exercise 1 out of 4
Choose the correct Past Simple forms of the irregular verbs below.
Choose the correct option.
To give
1. Gove
2. Given
3. Guve
4. Gave
To wear
1. Wear
2. Worn
3. War
4. Wore
To spend
1. Spend
2. Spent
3. Speent
4. Spand
To cost
1. Cast
2. Cust
3. Cost
4. Coast
To drive
1. Driven
2. Driver
3. Drove
4. Drave
To come
1. Come
2. Came
3. Cume
4. Come
Exercise 2 out of 4
Most verbs in each line are either regular
or irregular. In each line, choose a verb that is different from the order three and write it's Past Simple form.
Write one word each gap.
To buy-to sell-to walk- to go.
To eat-to study- to drink- to sing.
To teach-to play-to jump-to appear.
To write-to read- to explain-so see.
To perform-to watch-to understand-to visit
Exercise 3 out of 4
Read Lena's letter about her awful week and complete it with the Past Simple of the verbs below.
Write one word in each gap.
to, be, to fight, to be, to say, to fall, to think, to find, to be,to break
Hi there!
How are you?
On Tuesday my camera .... on the floor and ... . What a pity! But my uncle .... he could fix it. After that, on Friday, I ... with my sister. She ... her T-shirt in my room, and she ... really angry with me. But I ... it ... my T-shirt. I hope your week .. better than mine!
See you,
Lena
Exercise 4 out of 4
Choose the irregular verbs from the list. More than one correct answer is possible.
Tick the correct answers.
To call
To invite
To come
To live
To give
To have

6 лет назад

Предмет: Английский язык, автор: saidovasaida09

ДАЮ 20 БАЛОВ
Нужно сочинение по картине на английском языке с переводом 7-8 предложений.

6 лет назад

Предмет: Алгебра, автор: amsmari

Упрости
ПОМОГИТЕеееее

6 лет назад

Предмет: Математика, автор: ewgenzar

У 2 белок 10 орехов.У одной на 2 ореха больше,чем у другой.
Обозначь каждый орех кругом и покажи на рисунке.сколько орех у каждой белки?

9 лет назад

Предмет: Математика, автор: anelyab200424

Запишите выражения 8 к 5, 15 к 7, 0,6 к 2, 1,4 к7, 0,25 к 5, 0,8 к 0,5

9 лет назад