For the following reaction, 4.06 grams of sulfur dioxide are mixed with excess oxygen gas. The reaction yields 4.70 grams of sulfur trioxide. 2SO2 (g) + O2 (g)  2SO3 (g) A. What is the theoretical yield of sulfur trioxide? ____________grams  B. What is the percent yield for this reaction? ____________%

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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".