Вопрос школьника по предмету Химия
В реакцию с кремниевой кислотой вступает
1) фосфат калия
2) оксид углерода(IV)
3) оксид фосфора(V)
4) гидроксид натрия
5) оксид серы(II)
Помогите пожалуйста, заранее спасибо!
В реакцию с кремниевой кислотой вступает
1) фосфат калия
2) оксид углерода(IV)
3) оксид фосфора(V)
4) гидроксид натрия
5) оксид серы(II)
Помогите пожалуйста, заранее спасибо!
ответ:2,3,5…………………
Похожие вопросы от пользователей
X+(x+40)=164
3. Have или has.
I …. answered the question.
She ….. opened the window.
They …… called us.
You ….. carried a box.
It ….. rained a lot.
We ………washed the car.
He ………..closed the window.
Jenny …………….locked the door.
The girls ………..visited the museum.
John and Sophie ………..helped in the garden
1. Have you been to Paris? (ever/never
2 Look, your brother has come in. (usually/just)
3 I have tried to read War and Peace but I always stop because it’s difficult. (usually/often)
4 We have visited the Czech Republic. What’s it like? (sometimes/never)
5 Peter has given me his homework on time . (sometimes/never)
6 Have you been to the cinema with Tom? (ever/ just)
7 I haven’t used that computer so I don’t know what to do. (never/ever)
8 They have done the homework. Here it is. (already/yet)
9 They haven’t done the homework. It’s for next week. (already/yet)
10 I’ve worked here ten years, (since/for)
11 I’ve worked here 2000. (since/for)
12 I’ve worked here. (all my life/since)