Ольга Используем таблицу Менделеева. Находим атомную массу элемента и умножаем на количество атомов данного элемента в молекуле. Так для каждого входящего в молекулу элемента — затем суммируем.
Например: M(N2) = 2 * 14 = 28, т. к. атомная масса азота по таблице = 14
Задание
Развернуть задание
Form nouns from the verbs in brackets.
1. He’s an excellent …….. . (act)
2. The …….. wants to see you. (manage)
3. He wants to become an …….. . (art)
4. Spielberg is a famous …….. . (direct)
5. Is she the new ……..? (teach)
1. He’s an excellent …….. . (act)
2. The …….. wants to see you. (manage)
3. He wants to become an …….. . (art)
4. Spielberg is a famous …….. . (direct)
5. Is she the new ……..? (teach)
Развернуть задание
Новое решение
Решение
Act (играть), manage (управлять), art (искусство), direct (руководить), teach (учить).
1. He’s an excellent actor (актер).
2. The manager (руководитель) wants to see you.
3. He wants to become an artist (художник).
4. Spielberg is a famous director (режиссер).
5. Is she the new teacher (учитель)?
1. He’s an excellent actor (актер).
2. The manager (руководитель) wants to see you.
3. He wants to become an artist (художник).
4. Spielberg is a famous director (режиссер).
5. Is she the new teacher (учитель)?
Act (играть), manage (управлять), art (искусство), direct (руководить), teach (учить).
1. He’s an excellent actor (актер).
2. The manager (руководитель) wants to see you.
3. He wants to become an artist (художник).
4. Spielberg is a famous director (режиссер).
5. Is she the new teacher (учитель)?
1. He’s an excellent actor (актер).
2. The manager (руководитель) wants to see you.
3. He wants to become an artist (художник).
4. Spielberg is a famous director (режиссер).
5. Is she the new teacher (учитель)?