Question

The molecular mass of a substance is the sum of the ..........................of all the atoms in a single molecule of that substance) *

(Element)(Atomic masses)

(Atomic numbers)

(None of above)

​

Answer 1

Answer: Molecular. The molecular mass. of a substance is the sum of the average masses of the atoms in one molecule of a substance. It is calculated by adding together the atomic masses of the elements in the substance, each multiplied by its subscript (written or implied) in the molecular formula.

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