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dashkiin
@dashkiin
July 2022
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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
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Chemistry2016
Четвертый вариант.
Ca + 2H2O = Ca(OH)2 + H2
2Ca + O2 = 2CaO
Ca + Cl2 = CaCl2
4 votes
Thanks 3
саргсян14
4) H20 + Ca = cao + H2
О2 + 2Ca = 2са0
2Ca+ 2cl= Cacl2
2 votes
Thanks 1
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Answers & Comments
Ca + 2H2O = Ca(OH)2 + H2
2Ca + O2 = 2CaO
Ca + Cl2 = CaCl2
О2 + 2Ca = 2са0
2Ca+ 2cl= Cacl2