Chemistry is an experimental science.

Stoichiometry is a quantitative chemistry. “Calculations based on law of conservation of mass, law of constant composition and balanced chemical equations are called stoichiometric calculations.” 

Science, Society Relationship:

Stoichiometry has many applications in human society.

It calculates:

• Concentrations of different substances in a sample.
• Glucose in blood of diabetics.
• Steroid and other stamina enhancing drugs. So helps in doping control.
• Cholesterol level in blood.
• Quantity of medicines.
• Metal in ore (metallurgy).