Silicon nitride, a very hard, high-temperature resistant ceramic used as the material for turbine blades in jet engines is prepared by reacting silicon with nitrogen gas. The balanced chemical reaction is given below: 3 Siçs) + 2 N2 (9) → SizNa (s) A. What mass of nitrogen gas (molar mass: 28.014 g/mol) reacts with 10.00 g of silicon (molar mass: 28.085 g/mol)? Oa. 6.650 g N2 Ob. 6.667 g N2 Oc. 14.96 g N2 Od. 15.00 g N2 B. How much SigN4 (molar mass: 140.28 g/mol) is produced by reacting 10.00 g of silicon in excess nitrogen gas? Oa. 30.00 g SigN4 Ob. 16.65 g SIN4 Oc. 3.333 g SI3N4 Od. 14.98 g SiN4 C. If the actual amount of SigN4 produced from 10.00 g of silicon is 11.31 g, what is the percent yield of the reaction? Oa.75.50% Ob. 342.7% Oc. 67.93% Od. 37.70%

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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".