the middle value in a set of data that has been arrange in numerical order

gives tye SIMPLEST whole number ratio of atoms in a chemical compound

expresses the mass of a substance per unit volume

ratio of the mass of a substance to tye mass of an equal volume of water

also called arithmetic mean or average

is 1/1000 of a mole, and the mass in grams of that substance

the mass in grams of 1 mole of that substance

used to EXPRESS the concentration of commercial aqueous reagents

a measure of precision

often used to INDICATE the composition of dilute aqueous solution of solid reagents

SPECIFIES the number of atoms in a molecule

can have significand effect on the mean of tge set but has no effect on median

the molar concentration of particular species in a solution

-causes data to be scattered more or less symmetrically - affects measurement precision

often more useful quantity than the absolute error

parts per hundred

the difference between the measured value or true value

closeness of result to others

closeness on results to the true vallue

subset of measurements selected from the population

-causes the mean of a data set to differ from accepted value - affects accuracy of results/measurement

the number of mole of that species that is contained in 1 liter solution

total number of moles of a solute, regardless of its state in 1L of solution

used to SPECIFY the concentration of a solution

the relationship among the number of moles of reactants and products

SI unit for the amount of a chemical substance

samples of about the same size that are carried through an analysis in the exact same way

measure of the precision of the population

the collection of all measurements of interest to the experimenter