Даны формулы веществ: SO3; K2S; MgS; CaSO4; Al2S3; NaHSO4; SO2.Число сульфидов равно: 1) 1 2) 2 3) 3 4) 4

Даны формулы веществ:
SO3; K2S; MgS; CaSO4; Al2S3; NaHSO4; SO2.
Число сульфидов равно:
1) 1 2) 2 3) 3 4) 4
- Предмет:
  Химия
- Автор:
  steven599
- 6 лет назад

Ответы 7

Спасибо большое!
- Автор:
  sweetie63
- 6 лет назад
- 0
Спасибо большое!
- Автор:
  booaywn
- 6 лет назад
- 0
а чему равно число сульфидов ?
- Автор:
  eleanor42
- 6 лет назад
- 0
Три формулы - три сульфида.
- Автор:
  jalen345
- 6 лет назад
- 0
спасибо
- Автор:
  dutchesterry
- 6 лет назад
- 0
K2S; MgS; ; Al2S3;
- Автор:
  wilmamlgm
- 6 лет назад
- 0
Сульфидами в данном случае являются:
K₂S; MgS и Al₂S₃
- Автор:
  kamarirowland
- 6 лет назад
- 0
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Помогите пжста!!!!!! 1. Read the text and mark the statements True (T), False (F) or Not Stated (NS).

My Dream House

My name's Mark. We all know that every living person needs a place to stay. And that place is your home. A home is a place filled with joy, love, laughter, happiness and some-times sadness, too. So we all want to have a nice home.

Now let's dream a little. What is my dream house like? I can describe it in two words: big and comfortable. It is away from the noisy city centre, somewhere in the countryside. It's a detached house of course, not a small cottage. There's a small river nearby and a green lawn in front of it. From the outside the house is modern, with very big windows and balconies on each side. There are two stories in my house with an open air swimming pool at the top of the roof. Of course we have a garage and enough parking space.

In the basement there's some kind of a recreation centre. I mean, it has everything you need not to feel bored. Like video games, darts and painting stands.

On the ground floor I have a spacious kitchen with all the equipment: a coffeemaker, a dishwasher, a fridge, cup-boards and whatnot. There's also a huge living room with the dining room. So we can gather together with all the family to watch a film or just chat. And for that there are comfortable sofas with lots of cushions there. The dining room has a big oval table, so there's place for everyone.

I want to have a gym on the ground floor, too, because I love sport. The utility room is not far from the kitchen. On the first floor everyone can enjoy their private time. There's a bedroom with a shower for me and bedrooms for each member of the family and two or three small rooms for guests. I also want to have a library upstairs. You know, a real library with high bookshelves and big armchairs where you can sit and enjoy a book.

Outside there's a big garden. And somewhere near the corner of the land there's a small fireplace for barbecue. With a loving view of the mountains this place is the nicest part.

Well, that's my dream house. Sure I have some more ideas about it.... I just hope I will get it one day.

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5. The kitchen is very well-equipped.

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9. The barbecue area is in the middle of the garden.

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Даны формулы веществ: SO3; K2S; MgS; CaSO4; Al2S3; NaHSO4; SO2.Число сульфидов равно: 1) 1 2) 2 3) 3 4) 4

Ответы 7

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Даны формулы веществ:
SO3; K2S; MgS; CaSO4; Al2S3; NaHSO4; SO2.
Число сульфидов равно:
1) 1 2) 2 3) 3 4) 4