• Question: how many water particles would there be in the Atlantic ocean

    Asked by ZXU-Pulse to Frank on 18 Mar 2015.
    • Photo: Frank Longford

      Frank Longford answered on 18 Mar 2015:


      So the volume of water in the Atlantic ocean is around 354,700,000 cubic km, which is 354, 700, 000, 000, 000 cubic dm. Each mole of water contains 602,300,000,000,000,000,000,000 molecules and has a volume of 0.018 cubic dm. The sum is therefore:

      (602,300,000,000,000,000,000,000 / 0.018) x 354, 700, 000, 000, 000 =

      11,800,000,000,000,000,000,000,000,000,000,000,000,000
      = 11.8 x 10^39 water molecules (give or take a few)!

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