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what is stoichiometry?could you please give a clear explanation with examples?

Stoichiometry : It is the branch of chemistry that deals with the relative quantities of reactants and products in chemical reaction . In a balanced chemical reaction, the relations among quantities of reactants and products typically form a ratio of whole numbers.
 For example methane unites with oxygen in complete combustion ,16 gram of methane require 64 gram of oxygen .At the same time 44 gram of CO2 and 36 gram of H2O are formed as reaction productions .

   Every chemical reaction has it's characteristic proportions.  The method of obtaining these from chemical formulas, equations, atomic weights and molecular weights, and determination of what and how much is used and produced in chemical processes, is the major concern of stoichiometry.


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