Question

Mg-mgo-mg(no3)2-mg(oh)2-mgcl2-mg(no3)2

Answer 1

2Mg+O2=2MgO
MgO+2HNO3=Mg(NO3)2+H2
Mg(NO3)2+2NaOH=Mg(OH)2+2NaNO3
Mg(OH)2+2HCl=MgCl2+2H2O
MgCl2+2AgNO3=Mg(NO3)2+2AgCl

Answer 2

The sequence of chemical reactions you provided is as follows:

1. Mg (magnesium) reacts with O2 (oxygen) to form MgO (magnesium oxide): 2 Mg + O2 → 2 MgO

2. MgO (magnesium oxide) reacts with HNO3 (nitric acid) to form Mg(NO3)2 (magnesium nitrate) and H2O (water): MgO + 2 HNO3 → Mg(NO3)2 + H2O

3. Mg(NO3)2 (magnesium nitrate) does not react with anything in the given sequence.

4. MgO (magnesium oxide) reacts with H2O (water) to form Mg(OH)2 (magnesium hydroxide): MgO + H2O → Mg(OH)2

5. Mg(OH)2 (magnesium hydroxide) does not react with anything in the given sequence.

6. Mg(OH)2 (magnesium hydroxide) reacts with HCl (hydrochloric acid) to form MgCl2 (magnesium chloride) and H2O (water): Mg(OH)2 + 2 HCl → MgCl2 + 2 H2O

7. MgCl2 (magnesium chloride) reacts with HNO3 (nitric acid) to form Mg(NO3)2 (magnesium nitrate) and HCl (hydrochloric acid): MgCl2 + 2 HNO3 → Mg(NO3)2 + 2 HCl

Please note that the given reactions are not balanced. If you need the balanced equations, let me know.