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Definitions Ch 9

Exam 4

Mole ratios T: ratio of moles or reactants and products in every balanced chm eq. B: Conversion factors based on balanced chemical equations.
Stoichiometry Using a chemical equation to calculate the relative masses of the reactants and products of a reaction.
Limiting reactant Reactant that limits the amount of products that can be formed. It's used first in a chm reaction. Ex. once methane is consumed no more products can be made.
Theoretical yield B: Amount of product predicted for the amounts of the reactants used. T: Calculated from a limiting reactant problem.
Percent yield Amount of the actual yield compared to the theoretical yield. Actual yield / theoretical yield x 100%
Stoichiometry calculations calculations based on balanced chemical reactions to predict the cost of processes.
Law of conservation of mass Mass is neither created nor destroyed during a chemical reaction
Alloy Mixture of elements. Ex. Steel (has iron + other elements)
Mass- mass stoichiometry problem Used to convert the mass of a reactant or product to an unknown mass of reactant or product.
Actual yield Amount of product collected from an experiment.
Created by: lesliemelissa19



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