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# Calc Chem Equations

TermDefinition
Stoichiometry The area of chemistry that deals with quantitative relationships among reactants and products
Molar mass The sum of the atomic masses of all atoms in at element or compound
Mole ratio A ratio between the number of moles of any two species involved in a chemical reaction.
Limiting reactant Limits the amount of product that can be formed.
To identify the limiting reactant in a reaction: - Calculate the amount of product formed for each reactant. - Determine the limiting reactant by selecting the one that gives the least amount of product.
Theoretical yield The calculated amount of product that can be obtained from a given amount of reactant.
Actual yield The amount of product that we finally obtain experimentally.
To determine the actual amount of product formed in a limiting reactant situation: - Calculate the amount of the other reactant needed to react with the limiting reactant. - Subtract this amount from the original amount of the other reactant to find the amount of excess reactant (untracked)
Percent yield - The ratio of the actual yield to the theoretical yield multiplied by 100. - Actual yield / Theoretical yield x 100
Mole-Mole Calculations Convert the moles of starting substance to moles of desired substance.
Mole-Mass Calculations - Convert the moles of starting substance to moles of desired substance. - Convert the moles of desired substance to grams.
Mass-Mass Calculations - Convert the quantity of starting substance to moles. - Convert the moles of starting substance to moles of desired substance. - Convert the moles of desired substance to the appropriate unit.
Created by: NicholeBarber