Instructions: complete and balance the chemical equations for each chemical reaction in the virtual lab activity. 1. Combine iron and copper (II) sulfate solution. (Hint: Iron will form the iron (III) ion)

Fe + CuSO4 →

2. Combine lead (II) nitrate and potassium iodide solutions.

Pb(NO3)2+ Kl →

3. Combine magnesium metal and hydrochloric acid solution.

Mg + HCl →

4. Electrolysis (splitting) of water.

H2O →

5. Burning magnesium.

Mg + O2 →

1.Combine iron and copper (II) sulfate solution.  (Hint: Iron will form the iron (III) ion)

Fe + CuSO4 → FeSO4 + Cu

2.Combine lead (II) nitrate and potassium iodide solutions.

Pb(NO3)2+ Kl →  Pbl2 + 2KNO3

3.Combine magnesium metal and hydrochloric acid solution.

Mg + HCl → MgCl2 + H2

4.Electrolysis (splitting) of water.  

H2O → 2H2 + O2

5.Burning magnesium.

Mg + O2 → Mg2+O2-

Explanation:

answer: c.

explanation:

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"