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How many atoms are there in 100 amu of He? |
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Answer» Solution :We know that, 1 AMU =x WEIGHT of one 12 C ATOM or weight of one `""^(12)C`atom = 12 amu (at. wt. of C = 12 amu). Similarly, as the atomic weight of He is 4 amu, weight of one He atom = 4 amu. Thus, the number of atoms in 100 amu of `He = 100/4 = 25` |
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