Question

what relative molecules mass​

Answer 1

Answer:

The relative molecular mass/relative formula mass is defined as the sum of all the individual atomic masses of ALL the atoms in the formula (Mr). e.g. for ionic compounds e.g. NaCl = 23 + 35.5 58.5) or molecular mass for covalent elements or compounds ...

Explanation:

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Answer 2

Answer:

The ratio of the average mass of molecule of an element or compound to one twelth of the mass of an atom of carbon-12.