Question

help me!!!!!!!!!!!!!!!!!​

Answer 1

1) 2 Ca + O² ===> 2 CaO

2) CaO + H²O ===> Ca(OH)²

3) Ca(OH)² + 2 HCl ===> CaCl² + 2 H²O

4) CaO + 2 HNO³ ===> Ca(NO³)² + H²O

5) Ca(OH)² + Cu(NO³)² ===> Ca(NO³)² + Cu(OH)² ↓