Studied by 13 people
Mass Spectrometer
tool that separates the components of a sample by mass and electrical charge
Atomic Mass
mass of an atom (protons + neutrons)
is the weighted average of all isotopes
Mole
unit of measurement for amount of substance
1 mole = 6.022 x 10^23 units of something
Molar Mass
the mass of 1 mole of a specific substance
Percent Composition
ratio of the mass of each element in a compound to the mass of the entire compound
Empirical Formula
the simplest whole number ratio of the elements present in a compound
Molecular Formula
number of atoms of each element in one molecule of a specific compound
Chemical Equation
representation of a chemical reaction that uses symbols to indicate the identity and amount of each reactant and product
Reactant
substances that are consumed in a chemical reaction
Product
substances that are formed through a chemical reaction
Stoichiometry
branch of chemistry that applies the law of definite proportions and conservation of mass to chemical reactions
quantitative relationship between the substances in a chemical reaciton
Stoichiometric Quantities
the amount of substance specified by the coefficients in a balanced chemical equation
Limiting Reactant
the chemical reaction will completely use up this reactant
upon using up this reactant, the chemical reaction will stop
Excess Reactant
the reactant that will not be used up by the end of the chemical reaction
there will be excess of this reactant at the end of the chemical reaction
Theoretical Yield
the predicted amount of product that will form in a chemical reaction
Actual/ Exprimental Yield
the amount of product formed in an experiment
Percent Yield
100% x (actual yield / theoretical yield)
Note
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