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18 Cards in this Set

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  • Back
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