Mole Concept and Stoichiometry – Notes

Ram and RMM

The Relative Atomic Mass or RAM of an element is the number of times an atom of that element is heavier than ^th the mass of an atom of carbon- 12.

One atomic mass unit is defined as the mass equal to ^th of the mass of carbon- 12.

When the relative atomic mass of an element is expressed in grams, it is known as gram atomic mass or gram atom of that element.

The relative molecular mass or RMM of a substance of an element or compound is the number of times one molecule of the substance is heavier than.