instructions: balance the chemical equations below.
1) ___ n₂ + ___ o₂ → ___ n₂o
2) ___ zn + ___ hcl → ___ zncl₂ + ___ h₂
3) ___ fe + ___ o₂ → ___ fe₂o₃
4) ___ al + ___ feo → ___ al₂o₃ + ___ fe
5) ___ p₄ + ___ o₂ → ___ p₂o₅
6) ___ c₃h₈ + ___ o₂ → ___ co₂ + ___ h₂o
7) ___ mgf₂ + ___ li₂co₃ → ___ mgco₃ + ___ lif
8) ___ br₂ + ___ h₂o → ___ hbr + ___ o₂
9) ___ kbr + ___ h₂so₄ → ___ k₂so₄ + ___ hbr
10) ___ c + ___ so₂ → ___ cs₂ + ___ co
11) ___ al + ___ h₂so₄ → ___ al₂(so₄)₃ + ___ h₂
12) ___ fecl₃ + ___ naoh → ___ fe(oh)₃ + ___ nacl

Question

Accepted Answer

# Explanation:
## Step1: Balance nitrogen and oxygen in $N_2 + O_2
ightarrow N_2O$
By trial - and - error, we get $2N_2+O_2 = 2N_2O$
## Step2: Balance zinc and hydrogen - chlorine in $Zn + HCl
ightarrow ZnCl_2 + H_2$
We need 2 moles of $HCl$, so $Zn + 2HCl=ZnCl_2 + H_2$
## Step3: Balance iron and oxygen in $Fe + O_2
ightarrow Fe_2O_3$
Multiply to get $4Fe + 3O_2 = 2Fe_2O_3$
## Step4: Balance aluminum, iron and oxygen in $Al + FeO
ightarrow Al_2O_3 + Fe$
We get $2Al+3FeO = Al_2O_3 + 3Fe$
## Step5: Balance phosphorus and oxygen in $P_4 + O_2
ightarrow P_2O_5$
We have $P_4+5O_2 = 2P_2O_5$
## Step6: Balance carbon, hydrogen and oxygen in $C_3H_8 + O_2
ightarrow CO_2 + H_2O$
We get $C_3H_8+5O_2 = 3CO_2 + 4H_2O$
## Step7: Balance magnesium, fluorine, lithium and carbon - oxygen in $MgF_2 + Li_2CO_3
ightarrow MgCO_3 + LiF$
We have $MgF_2+Li_2CO_3 = MgCO_3 + 2LiF$
## Step8: Balance bromine, hydrogen and oxygen in $Br_2 + H_2O
ightarrow HBr + O_2$
We get $2Br_2 + 2H_2O = 4HBr+O_2$
## Step9: Balance potassium, bromine, hydrogen and sulfur - oxygen in $KBr + H_2SO_4
ightarrow K_2SO_4 + HBr$
We have $2KBr + H_2SO_4 = K_2SO_4+2HBr$
## Step10: Balance carbon and sulfur - oxygen in $C + SO_2
ightarrow CS_2 + CO$
We get $5C + 2SO_2 = CS_2+4CO$
## Step11: Balance aluminum, hydrogen and sulfur - oxygen in $Al + H_2SO_4
ightarrow Al_2(SO_4)_3 + H_2$
We have $2Al + 3H_2SO_4 = Al_2(SO_4)_3+3H_2$
## Step12: Balance iron, chlorine, sodium and hydrogen - oxygen in $FeCl_3 + NaOH
ightarrow Fe(OH)_3 + NaCl$
We have $FeCl_3 + 3NaOH = Fe(OH)_3+3NaCl$

# Answer:
1) $2N_2+O_2 = 2N_2O$
2) $Zn + 2HCl=ZnCl_2 + H_2$
3) $4Fe + 3O_2 = 2Fe_2O_3$
4) $2Al+3FeO = Al_2O_3 + 3Fe$
5) $P_4+5O_2 = 2P_2O_5$
6) $C_3H_8+5O_2 = 3CO_2 + 4H_2O$
7) $MgF_2+Li_2CO_3 = MgCO_3 + 2LiF$
8) $2Br_2 + 2H_2O = 4HBr+O_2$
9) $2KBr + H_2SO_4 = K_2SO_4+2HBr$
10) $5C + 2SO_2 = CS_2+4CO$
11) $2Al + 3H_2SO_4 = Al_2(SO_4)_3+3H_2$
12) $FeCl_3 + 3NaOH = Fe(OH)_3+3NaCl$

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Step1: Balance nitrogen and oxygen in $N_2 + O_2

Step2: Balance zinc and hydrogen - chlorine in $Zn + HCl

Step3: Balance iron and oxygen in $Fe + O_2

Step4: Balance aluminum, iron and oxygen in $Al + FeO

Step5: Balance phosphorus and oxygen in $P_4 + O_2

Step6: Balance carbon, hydrogen and oxygen in $C_3H_8 + O_2

Step7: Balance magnesium, fluorine, lithium and carbon - oxygen in $MgF_2 + Li_2CO_3

Step8: Balance bromine, hydrogen and oxygen in $Br_2 + H_2O

Step9: Balance potassium, bromine, hydrogen and sulfur - oxygen in $KBr + H_2SO_4

Step10: Balance carbon and sulfur - oxygen in $C + SO_2

Step11: Balance aluminum, hydrogen and sulfur - oxygen in $Al + H_2SO_4

Step12: Balance iron, chlorine, sodium and hydrogen - oxygen in $FeCl_3 + NaOH

Answer: