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18 Cards in this Set

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 Avogadro's number the number of units in a mole; 6.022 x 10^23 Balanced said of an equation in which the numbers and kinds of atoms on both sides of the arrow are the same Coefficient a number placed before a formula in an equation to indicate how many formula units are required to balance the equation Empirical formula a formula that gives the ratios of atoms in a compound Formula mass the sum of atomic masses of all atoms in one formula unit of a substance Formula unit one unit (atom, ion, or molecule) corresponding to a given formula Limiting reactant the reactant present in limiting amount that controls the extent to which reaction occurs Molar mass the mass of 1 mol of substance; equal to the molecular or formula mass of the substance in grams Molarity (M) a common unit of conentration; the number of moles of solute per liter of solution Mole (mol) the SI unit for amount of substance; the quantity of a substance that contains as many molecules or formula units as there are atoms in exactly 12g of carbon-12 Molecular formula a formula that tells the identity and numbers of atoms in a molecule Molecular mass the sum of atomic masses of the atoms in a molecule Percent composition a list of elements present in a compound and the mass percent of each Percent yield the amount of product actually formed in a reaction divided by the amount theoretically possible and multiplied by 100% Solute the dissolved sunstance in a solution Stoichiometry mole/mass relationships between reactants and products Titration a procedure for determining the concentration of a solution Yield the amount of product formed in a reaction