Question

хелп Пацаны, очень надо...........

Answer 1

1. 2Ca + O2 = 2CaO
2. CaO + H2O = Ca(OH)2
3. Ca(OH)2 + 2NaCl = 2NaOH + CaCl2
4. CaCl2 + 2NaNO3 = Ca(NO3)2 + 2NaCl
5. Ca + 2HCl = CaCl2 + H2
6. CaO + 2HCl = CaCl2 + H2O
7. Ca + 2HNO3 = Ca(NO3)2 + H2