Equation 1)

	Reactants	Coefficient	Products	Coefficient
	Zn		1		ZnCl2		1
	HCl		2		H2		1

Notice that a one is understood to be the coefficient of a formula with no number in front of it.

Equation 2)

	Reactant	Coefficient	Products	Coefficient
	KClO3		2		KCl		2
					O2		3

Equation 3)

	Reactants	Coefficient	Product		Coefficient
	S8		 1		SF6		8
	F2		24

Notice that a one is understood to be the coefficient of a formula with no number in front of it.

Equation 4)

	Reactants	Coefficient	Product		Coefficient
	Fe		4		Fe2O3		2
	O2		3

Equation 5)

	Reactants	Coefficient	Products	Coefficient
	C2H6		2		CO2		4
	O2		7		H2O		6