| ▲ | daedrdev 3 hours ago | |
Good thing there are 3*10^21 atoms of H2O in a water drop | ||
| ▲ | Aloisius 16 minutes ago | parent | next [-] | |
PFAS are expressed as a mass fraction, not mole fraction. | ||
| ▲ | wagwang 2 hours ago | parent | prev | next [-] | |
Ok and there are around that many atoms of pfas per tear drop? | ||
| ▲ | 2 hours ago | parent | prev [-] | |
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