実じっ験けん式しき

noun

empirical formula

Chemistry term for a formula showing the simplest whole-number ratio of atoms in a compound, determined by experiment.

• ベンゼンの実じっ験けん式しきはCHです。

  The empirical formula of benzene is CH.

• 実じっ験けん式しきから分ぶん子し式しきを求もとめるには分ぶん子し量りょうが必ひつ要ようだ。

  To determine the molecular formula from the empirical formula, the molecular weight is needed.