a. [tex]\( CO + O_2 \rightarrow CO_2 \)[/tex]

b. [tex]\( N_2O_5 + H_2O \rightarrow HNO_3 \)[/tex]

c. [tex]\( PCl_5 + H_2O \rightarrow H_3PO_4 + HCl \)[/tex]

d. [tex]\( CH_4 + Br_2 \rightarrow CBr_4 + HBr \)[/tex]

e. [tex]\( C_5H_{10}O_2 + CO_2 + H_2O \)[/tex]

f. [tex]\( Cr(OH)_3 + HClO_4 \rightarrow Cr(ClO_4)_3 + H_2O \)[/tex]

g. [tex]\( KNO_3 \rightarrow KNO_2 + O_2 \)[/tex]

h. [tex]\( La_2O_3 + H_2O \rightarrow La(OH)_3 \)[/tex]

i. [tex]\( NCl_3 + H_2O \rightarrow NH_3 + HOCl \)[/tex]

j. [tex]\( Mg_3N_2 + HCl \rightarrow MgCl_2 + NH_4Cl \)[/tex]

k. [tex]\( AgNO_3 + K_2SO_4 \rightarrow Ag_2SO_4 + KNO_3 \)[/tex]

l. [tex]\( Al(OH)_3 + H_2SO_4 \rightarrow Al_2(SO_4)_3 + H_2O \)[/tex]

m. [tex]\( CH_3NH_2 + O_2 \rightarrow CO_2 + H_2O + N_2 + H_2O \)[/tex]



Answer :

Sure, let's go through each chemical equation and provide the balanced coefficients step by step, as if calculated manually:

### a. [tex]\( \qquad CO + \qquad O_2 \rightarrow CO_2 \)[/tex]

- Reactants: CO, O2
- Products: CO2
- Balanced equation: [tex]\( 2CO + 1O_2 \rightarrow 2CO_2 \)[/tex]
- Coefficients: [tex]\([2, 1, 2]\)[/tex]

### b. [tex]\( \qquad N_2O_5 + \qquad H_2O \rightarrow \qquad HNO_3 \)[/tex]

- Reactants: N2O5, H2O
- Products: HNO3
- Balanced equation: [tex]\( N_2O_5 + H_2O \rightarrow 2HNO_3 \)[/tex]
- Coefficients: [tex]\([1, 1, 2]\)[/tex]

### c. [tex]\( \qquad PCl_5 + \qquad H_2O \rightarrow \qquad H_3PO_4 + \qquad HCl \)[/tex]

- Reactants: PCl5, H2O
- Products: H3PO4, HCl
- Balanced equation: [tex]\( PCl_5 + 4H_2O \rightarrow H_3PO_4 + 5HCl \)[/tex]
- Coefficients: [tex]\([1, 4, 1, 5]\)[/tex]

### d. [tex]\( \qquad CH_4 + \qquad Br_2 \rightarrow \qquad CBr_4 + \qquad HBr \)[/tex]

- Reactants: CH4, Br2
- Products: CBr4, HBr
- Balanced equation: [tex]\( CH_4 + 4Br_2 \rightarrow CBr_4 + 4HBr \)[/tex]
- Coefficients: [tex]\([1, 4, 1, 4]\)[/tex]

### e. [tex]\( \qquad C_5H_{10}O_2 + \qquad CO_2 + \qquad H_2O \)[/tex]

- Reactants: C5H10O2
- Products: CO2, H2O
- Balanced equation: Not specified
- Coefficients: [tex]\([]\)[/tex]

### f. [tex]\( \qquad Cr(OH)_3 + \qquad HClO_4 \rightarrow \qquad Cr(ClO_4)_3 + \qquad H_2O \)[/tex]

- Reactants: Cr(OH)3, HClO4
- Products: Cr(ClO4)3, H2O
- Balanced equation: [tex]\( Cr(OH)_3 + 3HClO_4 \rightarrow Cr(ClO_4)_3 + 3H_2O \)[/tex]
- Coefficients: [tex]\([1, 3, 1, 3]\)[/tex]

### g. [tex]\( \qquad KNO_3 \rightarrow \qquad KNO_2 + \qquad O_2 \)[/tex]

- Reactants: KNO3
- Products: KNO2, O2
- Balanced equation: [tex]\( 2KNO_3 \rightarrow 2KNO_2 + O_2 \)[/tex]
- Coefficients: [tex]\([2, 2, 1]\)[/tex]

### h. [tex]\( \qquad La_2O_3 + \qquad H_2O \rightarrow \qquad La(OH)_3 \)[/tex]

- Reactants: La2O3, H2O
- Products: La(OH)3
- Balanced equation: [tex]\( La_2O_3 + 3H_2O \rightarrow 2La(OH)_3 \)[/tex]
- Coefficients: [tex]\([1, 3, 2]\)[/tex]

### i. [tex]\( \qquad NCl_3 + \qquad H_2O \rightarrow \_ NH_3 + \qquad HOCl \)[/tex]

- Reactants: NCl3, H2O
- Products: NH3, HOCl
- Balanced equation: [tex]\( NCl_3 + 3H_2O \rightarrow NH_3 + 3HOCl \)[/tex]
- Coefficients: [tex]\([1, 3, 1, 3]\)[/tex]

### j. [tex]\( \qquad Mg_3N_2 + \qquad HCl \rightarrow \qquad MgCl_2 + \qquad NH_4Cl \)[/tex]

- Reactants: Mg3N2, HCl
- Products: MgCl2, NH4Cl
- Balanced equation: [tex]\( Mg_3N_2 + 6HCl \rightarrow 3MgCl_2 + 2NH_4Cl \)[/tex]
- Coefficients: [tex]\([1, 6, 3, 2]\)[/tex]

### k. [tex]\( \qquad AgNO_3 + \qquad K_2SO_4 \rightarrow \qquad Ag_2SO_4 + \qquad KNO_3 \)[/tex]

- Reactants: AgNO3, K2SO4
- Products: Ag2SO4, KNO3
- Balanced equation: [tex]\( 2AgNO_3 + K_2SO_4 \rightarrow Ag_2SO_4 + 2KNO_3 \)[/tex]
- Coefficients: [tex]\([2, 1, 1, 2]\)[/tex]

### l. [tex]\( \qquad Al(OH)_3 + \qquad H_2SO_4 \rightarrow \qquad Al_2(SO_4)_3{ }^{+} \qquad H_2O \)[/tex]

- Reactants: Al(OH)3, H2SO4
- Products: Al2(SO4)3, H2O
- Balanced equation: [tex]\( 2Al(OH)_3 + 3H_2SO_4 \rightarrow Al_2(SO_4)_3 + 6H_2O \)[/tex]
- Coefficients: [tex]\([2, 3, 1, 6]\)[/tex]

### m. [tex]\( \qquad CH_3NH_2 + \qquad O_2 \rightarrow \qquad CO_2 + \qquad H_2O + \qquad N_2 \)[/tex]

- Reactants: CH3NH2, O2
- Products: CO2, H2O, N2
- Balanced equation: [tex]\( 4CH_3NH_2 + 9O_2 \rightarrow 4CO_2 + 10H_2O + 2N_2 \)[/tex]
- Coefficients: [tex]\([4, 9, 4, 10, 2]\)[/tex]