Please, just five questions I don't get! Any chemistry people out there??!!!?

Question

I have NO idea how to do these. Please help me!
Write and balance the following chemical equations...
1) Zinc reacts with iron (III) chloride yielding zinc chloride plus iron precipitate.
2) Ammonium carbonate and magnesium sulfate react to yield ammonium sulfate plus magnesium carbonate.
3)Phosphoric acid plus calcium hydroxide react forming solid calcium phosphate plus water.
4)Aluminum plus oxygen gas form aluminum oxide under certain conditions.
5) Nitrogen gas plus oxygen gas react and form dinitrogen pentoxide.
thank you soooo much!!!!!

Answer 1

1. 3Zn(s) + 2FeCl3(aq) --> 3ZnCl2(aq) + 2Fe(s)

2. (NH4)2CO3(aq) + MgSO4(aq) ---> (NH4)2SO4(aq)
+ MgCO3(s)

3. 2H3PO4(aq) + 3Ca(OH)2(aq) ---> Ca3(PO4)2(aq)
+ 6H2O(l)

4. 4Al (s) + 3O2(g) --> 2Al2O3(s)

5. 2N2(g) + 5O2(g) --> 2N2O5(g)

Answer 2

3 Zn + 2 FeCl3 --> 3 ZnCl2 + 2 Fe

(NH4)2CO3 + MgSO4 --> (NH4)2SO4 + MgCO3

2 H3PO4 + 3 Ca(OH)2 --> Ca3(PO4)2 + 6 H2O

4 Al + 3 O2 --> 2 Al2O3

2 N2 + 5 O2 --> 2 N2O5

Answer 3

1) 3 Zn + 2 FeCl3 ---> 3 ZnCl2 + 2 Fe
2) (NH4)2CO3 + MgSO4 ---> (NH4)2SO4 + MgCO3
3) 2 H3PO4 + 3 Ca(OH)2 ---> Ca3(PO4)2 + 6 H2O
4) 4 Al + 3 O2 ---> 2 Al2O3
5) 2 N2 + 5 O2 ---> 2 N2O5

Answer 4

I'll give you some hints;
first write all of the compounds into elemental symbols
e.g. zinc = Zn
then change "yield" or "react" into an arrow pointing to the right.
Now balance them by making sure each side has the same amount of each type of atom.