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Ряд, в котором все вещества реагируют с кальцием
1)H2, O2 , CO2
2) CAO , HCL , HNO3
3) KOH , HgO, H3PO4
4) H2O , O2,CL2
Ответы 2
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Четвертый вариант.Ca + 2H2O = Ca(OH)2 + H22Ca + O2 = 2CaOCa + Cl2 = CaCl2
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Автор:
frances - 6 лет назад
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0
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4) H20 + Ca = cao + H2О2 + 2Ca = 2са02Ca+ 2cl= Cacl2
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Автор:
aubriehartman - 6 лет назад
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0
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