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закончить уравнение химической реакции,расставьте коэффициенты , запишите уравнение в полном и сокращенном виде,назовите исходные вещества и продукты реакции Ba(OH)2 + KCI .... и Na2O+....> H2O...+
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Второй не могу сделать.
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Автор:
gage811 - 5 лет назад
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Помогите с тестами пожалуйста,буду очень благодарен
1. Choose the correct answer
... friend made some mistakes in his dictation.
A) My;
B) He;
C) Mine;
D) Them;
E) Yours.
2.Did ... see this film yesterday?
A) somebody;
B) anybody;
C) nobody;
D) everybody;
E) anything.
3.These pencils are ... , take ... if you want.
A) my / it;
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D) her / them;
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A) her / her;
B) hers / her;
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D) my / mine;
E) mine / my.
5.... of you knows his address?
A) Who;
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6.This famous poet was born on ... of October.
A) the twenty three;
B) twenty threeth;
C) the twenty third;
D) twentieth third;
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7.She is very pretty, ... ?
A) is she;
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C) isn’t she;
D) doesn’t she;
E) has she.
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A) isn’t it;
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A) much;
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2)Вставь пропущенные символы, допиши и уравняй.
Mg + X = MgЗ (РО4)2 + ?
Fe2O3 + Х = Fe + ?-
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