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fenek56
@fenek56
December 2021
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Помогите! 5-ый номер:)
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michellej
1) 2Ca + H2 = 2CaH2
2) CaH2 + O2 = Ca(OH)2
3) Ca(OH)2 + H2CO3 = CaCO3 + H2O
4) CaCO3 + 2HCl = CaCl2 + H2O + CO2
5) 3CaCl2 + 2H3PO4 = Ca3(PO4)2 + 6HCl
6) 2Ca + O2 = 2CaO
7) CaO + H2O = Ca(OH)2
8) CaCO3 = CaO + CO2
9) CaO + 2HCl = CaCl2 + H2O
10) Ca + 2H2O = Ca(OH)2 + H2
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Answers & Comments
2) CaH2 + O2 = Ca(OH)2
3) Ca(OH)2 + H2CO3 = CaCO3 + H2O
4) CaCO3 + 2HCl = CaCl2 + H2O + CO2
5) 3CaCl2 + 2H3PO4 = Ca3(PO4)2 + 6HCl
6) 2Ca + O2 = 2CaO
7) CaO + H2O = Ca(OH)2
8) CaCO3 = CaO + CO2
9) CaO + 2HCl = CaCl2 + H2O
10) Ca + 2H2O = Ca(OH)2 + H2