Ответ:
1) Si02+2Mg=(t)2MgO+Si
2)Si+2Ca=(t)Ca2Si
3)Ca2Si+H2O=Ca(OH)2 +SiH4
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Ответ:
1) Si02+2Mg=(t)2MgO+Si
2)Si+2Ca=(t)Ca2Si
3)Ca2Si+H2O=Ca(OH)2 +SiH4