Хелп Пацаны, очень надо...........
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