Природное соединение, содержащее кальций 1)поваренная соль 2)боксит 3)известняк 4) кварц - №22917505

Природное соединение, содержащее кальций 1)поваренная соль
2)боксит
3)известняк
4) кварц
- Предмет:
  Физика
- Автор:
  cantu
- 5 лет назад

Ответы 1

Кальций содержит поваренная соль
- Автор:
  layla
- 5 лет назад
- 0
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Вычисли, какая масса алюминия потребуется для реакции с 0,12 моль кислорода.

(Введи ответ с точностью до двух знаков после запятой).

Ответ: m(Al)=
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Задание:Используйте активные и пассивные формы где нужно:

Walker's ambition (to be) to make a road right round the island and a great part of it already (to build). His roads (to be) the joy of his heart and he (to make) excursions constantly to see that they (to keep) in order.

The roads (to be) wide tracks which (to cut) through the jungle. When they (to lay), trees (to root) out and rocks (to dig) up. It (to be) hard work, and all of it (to do) by the natives who (to pay) almost nominal wages for it.

Then the day (to come) when the natives (to learn) that larger sums (to pay) for such work in other places and they (to stop) the work. Now the wages (to discuss) in the village. The natives (to hold) together and (to say) they (not to return) to the work unless Walker (to agree) to accept their terms. The administrator only (to promise) to give them a feast when the road (to finish).

But when Walker (to find) that no attempt (to make) to start work, he (to go) to the village and (to ask) the men what silly game (to play). The natives (to be) calm and only (to say) they (to do) it if he (to give) them a hundred pounds. Walker (to fly) into a rage and (to say): «If you (not to start) in a week, take care». Then he (to turn) round and (to walk) away.

That same night when Walker (to stroll) along the road that (to run) past his house, he (to hear) something whizz past him and strike a tree. He (to understand) that something (to throw) at him. He (to know) it (to be) hopeless to pursue in the darkness. Instead he (to look) for what (to throw), but (can) find nothing. He (to go) quickly back to the house for a lantern. Then he (to return) to the place and after a long search (to see) a long knife sticking into the trunk of a tree. It (to throw) with such force that it (to require) quite an effort to pull it out.

The next day Walker (to ride) over to the village again. He (to find) the men sitting round the floor in the chief's hut. He (to guess) that the question of the road (to discuss) again. The hut (to form) in this way: trunks of a slender trees (to place) in a circle at intervals of perhaps five or six feet; a tall tree (to set) in the middle from which the thatched roof (to slope) downwards. At night or when it (to rain), coconut leaves (to pull) down. In the daytime that hut (to be) open for the breeze to blow through. Walker (to ride) up to the edge of the hut and (to call) out to the chief: «You (to leave) your knife in a tree last night», and he (to fling) it down on the ground.

On Monday Walker (to go) out to see if the natives (to start) work. There (to be) no sign of it. «They (to regret) it», he (to say) to himself, devising a scheme to punish them.

Next morning a large group of men (to come) into the village and their chief (to say) that they (to make) a bargain with Walker to build the road. According to the local rules of hospitality which (to have) the force of laws the people of the village (to have) to give lodging to the workers as well as provide them with food and drink as long as they (to wish) to stay. Soon it (to become) clear that the strangers (to work) very slowly. Ruin (to stare) the village people in the face. They (to realize) that Walker (to outwit) them and that they (to laugh) at. The humiliation (to be) hard to bear. So no one (to be) surprised when one afternoon Walker (to find) lying on the floor in his cabin — he (to shoot).
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