I need help, I don't know how to do these.

Single Displacement
Fe+S yeilds ___
Mg+O2 yeilds___
Cu+O2 yeilds___
CaO+H2O yeilds___
Decomposition
HgO yeilds___
NaHCO3 yeilds___
CuSO4+5H2Oyeilds___
Single Displacement
Zn+HCl yeilds___
Zn+CuSO4 yeilds___
NaBr+Cl2 yeilds___
Ca+H2O yeilds___
Cu+Pb(NO3)2 yeilds___
Double Displacement
AgNO3+NaCl yeilds___
Na2SO3+HCL yeilds___
AlCl3+NH4+OH yeilds___
NaOH+HCl yeilds___
Na2CO3+HCl yeilds___
Sr+MgSO4 yeilds___

None of the first four are single displacement. Here is how you tell.

synthesis:
A + B ==> AB

single displacement:
A + BC ==> AC + B

double displacement:
AB + CD ==> AD + CB

decomposition:
the opposite of synthesis.
AB ==> A + B

Follow these four examples to do all of those you list. Ask questions about what you have trouble with but be specific about each as to what you don't understand.

To determine the products of each chemical reaction, you need to understand the types of reactions involved and the rules that govern them.

1. Single Displacement Reaction:
In a single displacement reaction, one element is replaced by another element in a compound. The general format is: A + BC -> AC + B.

a. Fe + S yields FeS:
In this reaction, iron (Fe) displaces sulfur (S) in the compound to form iron sulfide (FeS).

b. Mg + O2 yields MgO:
Here, magnesium (Mg) reacts with oxygen (O2) to form magnesium oxide (MgO).

c. Cu + O2 yields CuO:
Copper (Cu) reacts with oxygen (O2) to produce copper oxide (CuO).

d. CaO + H2O yields Ca(OH)2:
Calcium oxide (CaO) reacts with water (H2O) to form calcium hydroxide (Ca(OH)2).

2. Decomposition Reaction:
In a decomposition reaction, a compound breaks down into simpler substances. The general format is: AB -> A + B.

a. HgO yields Hg + O2:
Mercury oxide (HgO) decomposes to form mercury (Hg) and oxygen gas (O2).

b. NaHCO3 yields Na2CO3 + H2O + CO2:
Sodium bicarbonate (NaHCO3) decomposes into sodium carbonate (Na2CO3), water (H2O), and carbon dioxide (CO2).

c. CuSO4·5H2O yields CuSO4 + H2O:
Copper(II) sulfate pentahydrate (CuSO4·5H2O) decomposes into copper(II) sulfate (CuSO4) and water (H2O) when heated.

3. Double Displacement Reaction:
In a double displacement reaction, the positive ions or cations in two compounds exchange places. The general format is: AB + CD -> AD + CB.

a. AgNO3 + NaCl yields AgCl + NaNO3:
Silver nitrate (AgNO3) reacts with sodium chloride (NaCl) to produce silver chloride (AgCl) and sodium nitrate (NaNO3).

b. Na2SO3 + HCl yields NaCl + H2O + SO2:
Sodium sulfite (Na2SO3) reacts with hydrochloric acid (HCl) to form sodium chloride (NaCl), water (H2O), and sulfur dioxide (SO2).

c. AlCl3 + NH4OH yields Al(OH)3 + NH4Cl:
Aluminum chloride (AlCl3) reacts with ammonium hydroxide (NH4OH) to produce aluminum hydroxide (Al(OH)3) and ammonium chloride (NH4Cl).

d. NaOH + HCl yields NaCl + H2O:
Sodium hydroxide (NaOH) reacts with hydrochloric acid (HCl) to form sodium chloride (NaCl) and water (H2O).

e. Na2CO3 + 2HCl yields 2NaCl + H2O + CO2:
Sodium carbonate (Na2CO3) reacts with hydrochloric acid (HCl) to produce sodium chloride (NaCl), water (H2O), and carbon dioxide (CO2).

f. Sr + MgSO4 yields SrSO4 + Mg:
Strontium (Sr) reacts with magnesium sulfate (MgSO4) to form strontium sulfate (SrSO4) and magnesium (Mg).

Remember to always balance the chemical equations by ensuring that the number of atoms on both sides are equal.