Glucose  (C6H12O6)  can be fermented to yield ethanol  (CH3CH2OH)  and carbon dioxide  (CO2).  C6H12O6⟶2CH3 CH2 OH+2 CO2 The molar mass of glucose is 180.15 g/mol,, the molar mass of ethanol is 46.08 g/mol, and the molar mass of carbon dioxide is 44.01 g/mol. What is the theoretical yield of ethanol from the fermentation of  69.0 g  of glucose? If the reaction produced  23.4 g  of ethanol, what is the percent yield?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".