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    Chemistry - Amount of Gold in Sea water

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    Extracting gold from seawater:

    How many grams of Au are there in the whole ocean? With a 60% recovery possible, how many liters of seawater must be processed for gold to obtain 1 kg of that metal?

    - MW of Au = 196.967 gram/mole
    - Avg. seawater concentration of Au = 2.5 x 10^-11 mole/kg of seawater
    - mean density of seawater = 1.037 gram/cm3 of seawater
    - equatorial radius of the earth = 6378 km
    - volume of the oceans = 361.059 x 10^6 km2
    - avg. depth of the oceans = 3795 meters

    © BrainMass Inc. brainmass.com October 9, 2019, 10:29 pm ad1c9bdddf
    https://brainmass.com/chemistry/environmental-chemistry/chemistry-amount-gold-sea-water-222060

    Solution Preview

    Extracting gold from seawater:

    How many grams of Au are there in the whole ocean? With a 60% recovery possible, how many liters of seawater must be processed for gold to obtain 1 kg of that metal?

    - MW of Au = 196.967 gram/mole
    - Avg. seawater concentration of Au = 2.5 x 10^-11 mole/kg of seawater
    - mean ...

    Solution Summary

    The expert calculates the amount of gold in sea water. A complete, neat and step-by-step solution is provided in the attached file.

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