Предмет: Химия, автор: hhihhih

45 балів!!закінчити рівняння ракцій!!

Приложения:

Ответы

Автор ответа: lunnyjkogot

ZnO + 2HCl --> ZnCl2 + H2O
Zn(OH)2 + 2KOH --> K2ZnO2 + 2H2О
Но в водных растворах:
Zn(OH)2 + 2KOH --> K2[Zn(OH)4]

4Al + 3O2 --> 2Al2O3
Al2O3 + 3Cu(OH)2 --> 3CuO + 2Al(OH)3 (не уверена)
Al(OH)3 + 3HCl --> AlCl3 + 3H2O
2Al(OH)3 + K2O --> 2KAlO2 + 3H2O

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Doggy2001

ПОМОГИТЕ!!! ПЛИЗЗ!!!
Составте текст. Если что на самом вверху страницы.

1 год назад

Предмет: Русский язык, автор: DashaLimareva

как пишется слово щ[о]чка?

1 год назад

Предмет: Английский язык, автор: znad

Santi is a little boy who is eight. He lives in Central Africa and goes to school there. School starts at seven o'clock in the morning, but he goes to school at half past six. Why? Well, he wants to get a desk near the teacher's table In Santi's class there are fifty-two pupils.
The pupils play in the playground before classes. Some of then wear their school uniform: a white blouse or a shirt and a blue skirt of trousers. When they come into the classroom, many of the girls take off their blouses and skirts. They usually put on T-shirts and shorts. They do this because they are not comfortable in uniform as it is very hot in the room and because they don't want to get their uniforms dirty.
Before classes they sing one or two songs. The pupils have classes five days a week. Every day they have five lessons. They study English, Maths, Geography, P. E., History, Music and Art. They have swimming, games and computer studies too.
Have a look at Santi's timetable.After classes Santi plays football and then goes home. When he comes home, he has something to eat. He usually watches cartoonson TV before he does his homework.
Укоротить рассказ

1 год назад