Ответы на вопрос:
2ca + o2 = 2 cao cao + h2o = ca(oh)2 3 ca(oh)2 + 2 k3po4 = ca3(po4)2 + 6 koh 2 cu + o2 = 2 cuo cuo + 2 hcl = cucl2 + h2o cucl2 + 2 naoh = cu(oh)2 + 2 nacl cu(oh)2 = cuo + h2o cuo + h2 = cu + h2o 4 p + 5 o2 = 2 p2o5 p2o5 + 3 h2o = 2 h3po4 2 h3po4 + 3 ca = ca3(po4)2 + 3 h2
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