BBC Bitesize: Atomic Number, Mass Number and Isotopes A Level Chemistry: Relative Atomic Mass, Relative Molecular Mass and Mass SpectrometryCite This Article MLA Johnson, Lee. "How To Find Relative Mass" sciencing.com, https://www.sciencing.com/how-to-find-relative-mass-13710549/. 19 March 20...
aThe masses of atoms and molecules are characterized by using quantities known as the relative atomic mass of an element (the atomic mass in short) and the relative molecular mass of a substance (the molecular mass ) 原子和分子大量描绘的是为使用数量以元素(原子质量的原子量简而言之)和物质的...