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answer and explain!
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. electrolysis (splitting) of water. h2o →
4. burning magnesium. mg + o2 →

1. 2Fe + 3CuSO₄ →  Fe₂(SO₄)₃ + 3Cu.

2. Pb(NO₃)₂+ 2Kl →  PbI₂ + 2KNO₃.

3. Mg + 2HCl →  MgCl₂ + H₂.

4. H₂O →  H₂ + 1/2O₂.

5. 2Mg + O₂ → 2MgO.

2Fe + 3CuSO₄ →  Fe₂(SO₄)₃ + 3Cu.

It is a redox reaction including replacing Cu with Fe and changing their oxidation states.

That Fe replaces Cu and resulting in ferric sulfate.

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

Pb(NO₃)₂+ 2Kl →  PbI₂ + 2KNO₃.

It is a double replacement reaction that lead nitrate reacts with potassium iodide resulting in lead iodide and potassium nitrate.

3.Combine magnesium metal and hydrochloric acid solution.

Mg + 2HCl →  MgCl₂ + H₂.

It is a dissolution reaction that HCl dissolve Mg and resulting in Magnesium chloride and hydrogen gas is evolved.

4.Electrolysis (splitting) of water.  

H₂O →  H₂ + 1/2O₂.

Water electrolysis resulting in splitting of water to produce hydrogen and water.

5.Burning magnesium.

2Mg + O₂ → 2MgO.

It is a combustion reaction that Mg is burned with oxygen to produce magnesium oxide.

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

2Fe + 3CuSO₄ →  Fe₂(SO₄)₃ + 3Cu.

It is a redox reaction including replacing Cu with Fe and changing their oxidation states.

That Fe replaces Cu and resulting in ferric sulfate.

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

Pb(NO₃)₂+ 2Kl →  PbI₂ + 2KNO₃.

It is a double replacement reaction that lead nitrate reacts with potassium iodide resulting in lead iodide and potassium nitrate.

3.Combine magnesium metal and hydrochloric acid solution.

Mg + 2HCl →  MgCl₂ + H₂.

It is a dissolution reaction that HCl dissolve Mg and resulting in Magnesium chloride and hydrogen gas is evolved.

4.Electrolysis (splitting) of water.  

H₂O →  H₂ + 1/2O₂.

Water electrolysis resulting in splitting of water to produce hydrogen and water.

5.Burning magnesium.

2Mg + O₂ → 2MgO.

It is a combustion reaction that Mg is burned with oxygen to produce magnesium oxide.

i do not get it   at all

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.