| − | The number of [[mole]]s of [[solute]] per kilogram of [[solvent]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref> | + | The number of [[mole]]s of [[solute]] per kilogram of [[solvent]].<ref>Wile, Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998.</ref> |