Help Chemistry!!!!!!!!!!! ( 10 points best answer)

1.) single replacement (just Al is replacing H)
2Al + 6HCl --> 2AlCl3 + 3H2 and an arrow going up (this up arrow just means this is a gas (g))

2.) single replacement (just C is replacing Fe)
2Fe2O3 + 3C --> 4Fe + 3CO2 and arrow going up

3.) synthesis (also called a combination reaction where 2 substances combine to form 1 substance)
2S(s) + 3O2(g) --> 2SO3 (g)

4.) synthesis
N2 + 3H2 --> 2NH3

5.) synthesis
3H2 + P2O5 --> 2H3PO4

6.) decomposition (this is the opposite of synthesis reaction - one substance reacts to give 2 or more other substances)
NH4NO2----> (there was a triangle below the arrow ) 2H2O + N2 and an arrow going up
(the triangle over or under arrow in equation just means heat is needed for this reaction to take place)

7.) double replacement (both Ba and Fe switching partners)
3Ba(NO3)2 + Fe2(SO4)3---> 3BaSO4 arrow going down + 2Fe(NO3)3

8.) double replacement (both Zn and Ag switching partners)
ZnCl2 + 2AgNO3 -->Zn(NO3)2 + 2AgCl arrow going down
(an arrow going down just means that a precipitate or solid has formed from after the reaction has taken place)

9.) synthesis
Na2O + H2O--> 2NaOH

10.) double replacement
3NiCO3 + 2Al(OH)3--> 3Ni(OH)2 + Al2(CO*3*)3

11.) decomposition
Ca(ClO3)2--> (triangle below the arrow) CaCl2 + 3O2 an arow going up

12.) single replacement (Mg is replacing the H in H2O)
Mg + 2H2O--> Mg(OH)2 + H2 and an arrow going up


and yes Happy Holidays to you too!! =)

_____ 1.) 2Al + 6HCl --> 2AlCl3 + 3H2 and an arrow going up

______2.)2 Fe2O3+ 3C --> 4Fe+ 3CO2 and arrow going up

______3.) 2S(s) +3 O2(g) --> 2SO3 (g) synthesis

______5.)3 H2O+ P2O5--> 2H3PO4

_______6. NH4NO2----> 2 H2O + N2

_______7. 3Ba(NO3)2 + Fe2(SO4)3---> 3BaSO4 + 2Fe(NO3)3 DR

______ 8.) ZnCl2 + 2AgNO3 -->Zn(NO3)2 + 2AgCl DR

______ 9.) Na2O + H2O--> NaOH______ 9.) Na2O + H2O--> NaOH

______ 9.) Na2O + H2O--> 2NaOH

_______10.) 3NiCO3 +2 Al(OH)3-->3 Ni(OH)2+ Al2(CO)3 DR

_______11.) Ca(ClO3)2--> CaCl2 +3O2 DECOMP

_______ 12.) Mg+ 2H2O--> Mg(OH)2 + H2 SR

I don't think you tried very hard to balance these. and just so you know, we are celebrating Christmas not "holidays".