50 POINTS Predict the following chemical equations (pls help its already late and I don't understand this)

Mg + Cl2 -->(synthesis)

Al + I2 --> (synthesis)

CuCl2 + K(OH) --> (double replacement)

Cu(CO3) --> (decomposition)

Mg + HCl --> (single replacement)

C4H10 + O2 -->(combustion)

H(NO3) + Ba(OH)2 --> (double replacement)

Zn + O2 -->(synthesis)

Fe + Cu(SO4) -->(single replacement)

C3H8 + O2 --> (combustion)

1. magnesium chloride is regenerated from magnesium hydroxide using hydrochloric acid: Mg(OH)2(s) + 2 HCl(aq) → MgCl2(aq) + 2 H2O(l) It can also be prepared from magnesium carbonate by a similar reaction.

2. 2Al + 3I2 → 2AlI3

3. CuCl2 + KOH → Cu(OH)2 + KCl

4. CuCO3 → CuO + CO2↑

5. Magnesium reacts with hydrochloric acid according to the equation: Mg(s) + 2 HCl(aq) --> MgCl 2(aq) + H 2(g) This demonstration can be used to illustrate the characteristic reaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.

6. C4H10 + O2 = CO2 + H2O

7. Ba(OH)2 + HNO3 = Ba(NO3)2 + H2O

8. Zn + O2 = ZnO

9. Fe + CuSO4 = Fe2(SO4)3 + Cu

10. C3H8 + O2 = CO2 + H2O

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l