• Question: how many atoms in a wee?

    Asked by millie.louiseefrtrt45 to Connor, Jillian, Lidunka, Sarah, Steven on 23 Jun 2015.
    • Photo: Lidunka Vocadlo

      Lidunka Vocadlo answered on 23 Jun 2015:

      @millie.louiseefrtrt45 well, a wee is about half a litre of effectively water, so about 500g. Then H2O is 18 g/mol, so we have about 28 mols. So that is 28 x avagadros number molecules = 1.67×10^25. But there are 3 atoms in a molecule, so about

      5 x 10^25 atoms in a wee !!!!

    • Photo: Sarah Beasley

      Sarah Beasley answered on 23 Jun 2015:

      Haha, that’s a good calculation from @Lidunka. Bearing in mind it also has stuff like urea, uric acid, ammonia…. and a load of other gross stuff. Is that something that’s been concerning you for a while? 😛

    • Photo: Steven Thomson

      Steven Thomson answered on 23 Jun 2015:

      Just in case you’re unfamiliar with scientific notation, Lidunka’s awesome answer can be written as 50000000000000000000000000 atoms. That’s a lot!