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01.03.2022 03:38 •  Химия

Укажіть сполуку, яка під час нагрівання розкладається з утворенням ферум(III) оксиду і води

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Ответ:
123654789e
123654789e
17.06.2020 13:01

It is difficult to imagine our life without shopping. On one hand, it’s one of quite important household tasks. Moreover, shopping is the way to get necessary food and clothes. So, if you don’t do it you can’t have all things which make your life so comfortable.

On the other hand, it’s believed that for the vast majority of people going shopping is not just duty or necessity but a real pleasure. As far as I know there is so called shopping therapy that helps people to reduce stress buying different goods or even just going window shopping.

As for me, I don’t belong to such group of people. Shopping doesn’t make me happy and sometimes it can even become a nightmare. When I can’t find things which I need, I can get annoyed and even stressed. Thus, I go shopping only when I don’t have any other choices. I usually go to a supermarket to buy some food once or twice a week. There is a huge shopping center near my house, so I can buy everything I need in one place. From time to time when I need something urgently I can look in a local shop nearby. I normally go shopping alone, that’s why I can do it quickly and effectively. I always make a shopping list before going.

Nowadays it’s becoming more and more popular to shop online. I’m firmly convinced that it’s the most comfortable way. You just surf the Internet and look through the enormous range of goods. Moreover, you can compare prices and find a real bargain. Also, you can have your purchases delivered. It’s amazingly easy and saves a lot of time and energy.

Thus, if you’re not a fan of shopping like me, do it online.

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Ответ:
Alina9392010
Alina9392010
01.06.2020 14:10

1)

3HCl +  Fe(OH)₃ = FeCl₃ + 3H₂O

3H⁺ + 3Cl⁻ +  Fe(OH)₃ = Fe³⁺ + 3Cl⁻ + 3H₂O

3H⁺ +  Fe(OH)₃ = Fe³⁺ + 3H₂O

6HCl + 2Al =  2AlCl₃ + 3H₂

6H⁺ + 6Cl⁻ + 2Al =  2Al³⁺ + 6Cl⁻ + 3H₂

6H⁺ + 2Al =  2Al³⁺ ⁻ + 3H₂

Na₂S + 2HCl = H₂S + 2NaCl

2Na⁺ + S²⁻ + 2H⁺ + 2Cl ⁻= H₂S + 2Na⁺ + 2Cl⁻

S²⁻ + 2H⁺ = H₂S 

ZnO + 2HCl = ZnCl₂ + H₂O

ZnO + 2H⁺ + 2Cl⁻ = Zn²⁺ + 2Cl⁻ + H₂O

ZnO + 2H⁺ =  Zn²⁺  + H₂O

2) 

H₃PO₄ + 3AgNO₃ = Ag₃PO₄ + 3HNO₃ 

3H⁺ + PO₄³⁻ + 3Ag⁺ + 3NO₃⁻ = Ag₃PO₄ + 3H⁺ + 3NO₃ ⁻

PO₄³⁻ + 3Ag⁺  = Ag₃PO₄

2H₃PO₄ + 3Na₂O = 2Na₃PO₄  + 3H₂O

6H⁺ + 2PO₄ + 3Na₂O = 6Na⁺ +  2PO₄ ³⁻  + 3H₂O

6H⁺ + 3Na₂O = 6Na⁺  + 3H₂O

H₃PO₄ + AlCl₃ = AlPO₄ + 3HCl

3H⁺ + PO₄³⁻ + Al³⁺ + 3Cl⁻ = AlPO₄ + 3H⁺ + 3Cl⁻

PO₄³⁻ + Al³⁺  = AlPO₄ 

3)

H₂SO₄ + Ag ≠

H₂SO₄ + SO₂≠

H₂SO₄ + K₂SO₄ ≠

H₂SO₄ + B₂O₃ ≠

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