Lesson
Lesson-4.1.4- Define relative molecular mass, M r, as the sum of the relative atomic masses. (Relative formula mass or M r will be used for ionic compounds.).
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Lesson-4.1.5- Define the mole and the Avogadro constant ??? Use the molar gas volume, taken as 24 dm3 at room temperature and pressure.PreviousLesson-4.1.3- Define relative atomic mass, A r, as the average mass of naturally occurring atoms of an element on a scale where the 12C atom has a mass of exactly 12 units.Next