It is the number of atoms present in one molecule of a substance.

It is the number of atoms present in one molecule of a substance.
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Mass of Sample | Mass of carbon | Mass of Hydrogen | |
Sample 1 | 1.0 g | 0.862 g | 0.138 g |
Sample 2 | 1.549 g | 1.335 g | 0.214 g |
Sample 3 | 0.988 g | 0.852 g | 0.136 g |