HELP. I NEED HELP. I NEED A CER ON THIS. I WILL PAY $5 or $10 I need help. Plz

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 →

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Can someone me with 3 and 4 plz. this is for masteries test.