Предмет: Химия, автор: Юляша04

Осуществить следующие превращения:
Zn --- ZnO --- Zn --- ZnSo4 --- Zn(OH)2 --- Na2ZnO2.

Ответы

Автор ответа: Gilart587

0

Zn+O2=2ZnO
2ZnO=(t) 2Zn+O2
Zn+H2so4=Znso4+H2
ZnSo4+Cu(OH)2=Zn(OH2)(осадок,стрелка вниз)+CuSo4
Zn(OH)2+2NaOH=Na2ZnO2+2H2O

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Литература, автор: gerlgat

Помогите пожалуйста!
Таблица.
Вспомните произведения Чехова. Заполните таблицу.
Заглавие произведения
Тема
Жанр

7 лет назад

Предмет: Қазақ тiлi, автор: Аноним

Казахстанский язык помогите срочно 7 класс

7 лет назад

Предмет: Английский язык, автор: fboy00954

Вопрос 1
Last year I _____ in the lottery and I hope to win in the lottery this year as well.

Варианты ответов
has won
wan
won
have won
Вопрос 2
He _____ a car yesterday, look at his contented expression!

Варианты ответов
buyed
has bought
have bought
bought
Вопрос 3
This week I ______ Mrs. Riot several times, she doesn’t look her age!

Варианты ответов
have seen
seen
have saw
saw
Вопрос 4
Why _____ last night? What was wrong with you, my dear?

Варианты ответов
did you cry
have you cried
has you cried
you cried
Вопрос 5
She ______ such a nice restaurant!

Варианты ответов
never visited
visited never
has never visited
has visited never
Вопрос 6
I _____ to the USA yet

Варианты ответов
have been
wasn’t
haven’t been
were not
Вопрос 7
They _____ to come a week ago but they haven’t redeemed this promise yet.

Варианты ответов
promised
have promised
did promise
has promised
Вопрос 8
What _____ you just said? Repeat, please!

Варианты ответов
did
were
have
do
Вопрос 9
They _____ into this house in 2014.

Варианты ответов
have moved
moved
did move
were moved
Вопрос 10
Only two days ago she _____ happy but now she’s very sad.

Варианты ответов
were
has been
was
have been
Вопрос 11
Recently I ____ the parcel you sent me the other days.

Варианты ответов
opened
have opened
am opened
had opened
Вопрос 12
Tell me, _____ already all the exercises I asked you to do?

Варианты ответов
have you done
were you done
did you do
has you done

7 лет назад

Предмет: География, автор: zaisunova

СРОЧНО...найдите на карте "Мировой океан" срединно-океанические хребты и определите их названия в каждом из океанов.....Срочно

10 лет назад

Предмет: География, автор: Nastvlabar

Как суша влияет на природу океана

10 лет назад