| A | B |
|---|
| atomic mass | weighed average of the masses of the existing isotopes of an element |
| formula mass | sum of the atomic masses of all atoms in a compound as represented in a chemical formula |
| mole | quantity of a substance that has a mass in grams numerically equal to its formula mass |
| Avogadro's number | 6.02x10^23 |
| molar mass | mass in grams of one mole of a substance |
| molar volume | volume of one mole of an ideal gas at standard conditions |
| percentage composition | mass of eah element in a compound relative to the total mass of the compound |
| empirical formula | chemical formula that gives the simplest whole-number ratio of atoms of elements in a compound |
| molecular formula | chemical formula that indicates the numbers of each atom in a molecular compound |
| twentytwopointfour | number of liters equal to one mole |
