Determine the mass of one oxygen molecule O2.
| September 17, 2021 | education
The atomic weight of oxygen is 16, which is not difficult to find from the table of D.I. Mendeleev
, then the atomic weight of the molecule is: 2 * 16 = 32
In order to find the weight of one molecule, it is enough to divide the atomic weight by Avogadro’s number (Na = 6.022 * 10 ^ 23)
then we get:
32 / 6.022 * 10 ^ 23 = 5.31 * 10 ^ -23 kg.
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