Предмет: Химия, автор: kokoshkovioletta20

ДУЖЕ ПОТРІБНА ДОПОМОГА!
SOS​

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Ответы

Автор ответа: Аноним
1

Ответ:

1. а) Al2O3 + HCl = AlCl3 + H2O

б) H2 + Cl2 = 2HCl - реакция соединения

2. Mg(OH)2

M(Mg(OH)2) = Ar(Mg) + 2Ar(O) + 2Ar(H) = 24 + 32 + 2 = 58 г/моль

ω(Mg) = Ar(Mg)*100/M(Mg(OH)2)

ω(Mg) = 2400/58

ω(Mg) = 41,4%

3. бв

Zn(OH)2 + 2Na = Na2ZnO2 + H2↑

Zn(OH)2 + 2HCl = ZnCl2 + 2H2O

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