Предмет: Химия, автор: misogi

Определите обьем кислорода,который необходим для окисления 54г алюминия

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Автор ответа: asilya2

0

4Al+3O2=2Al2O3
м AL 54
n AL 2.25
nAl:nO2 4:3
n O2 1.6875
V 37.8л

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6. My father is a cosmonaut . ( Is )
7. Those hares are in the bag . (What )
№ 3.
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№ 1.
1. This tiger … big .
2. How … your uncle ? He … fine .
3. Where … he from ? He … from America .
4. We … teachers .
5. This cat … in the bag .
6. I … a dentist .
7. Where … you from ? I … from Italy .
№ 2 .
1. This apple … yellow.
2. Where … they from ? They …
from Great Britain .
3. We … workers .
4. I … a painter .
5. The dog … in the house .
6. He … from Norway .
8. This eagle … brown .
9. How … you ? I … fine .
10. Those flowers … red .
7. His uncle … a pilot .
8. How … his mother ? She … fine .
9. These foxes … nice .
10. How old … you ? I … seven .
№ 3.
1. This dog … big .
2. These monkeys … funny .
3. She … a doctor .
4. Where … he from ? He … from Africa .
5. Those rabbits … in the box .
6. Her mother … an actriss.
7. These snakes … yellow .
8. Their families … from Germany .
9. How old … you ? I … nine .
10. His aunt … fine .
№ 4 .
1. Where … she from ? She … from Brazil
.
2. Her niece … a doctor .
3. How … you ? I … fine .
4. I … a hunter .
5. What colour … those flowers ? They …
violet .
6. He … a teacher .
7. That dog … little .
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9. The toys … on the shelf .
10. How old … he ? He … eight .
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№1
1. He ____________ got an uncle?
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