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Atoms and Molecules — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceAtoms and Molecules2 Marks
Question
Define ‘molecular mass’ of a substance.
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Answer

The molecular mass of a substance is the relative mass of its one molecule as compared with a $126CC612$atom. The mass of an atom of $126CC612$ is considered to be $12a.m.u.$

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