This article brings you the CBSE Class 9 Science Notes for Chapter 3 - Atoms and Molecules. These chapter notes are prepared by the subject experts and cover every important topic from the chapter. In ...
9. Molecular mass is defined as the: (a) Mass of one molecule of any substance compared with the mass of one atom of C – 12 (b) Mass of one atom compared with the mass of one atom of hydrogen (c) Mass ...
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