calculate amount of copper in the Berkeley mine pit and the total value of that

Question

calculate amount of copper in the Berkeley mine pit and the total value of that copper at 2016 prices There are 1.5 x 10^11 liters of water in the pit with concentrations as high as 150 ppm Cu2+ 2016 copper prices: $00.05/g^2 calculate amount of copper in the Berkeley mine pit and the total value of that copper at 2016 prices There are 1.5 x 10^11 liters of water in the pit with concentrations as high as 150 ppm Cu2+ 2016 copper prices: $00.05/g^2 calculate amount of copper in the Berkeley mine pit and the total value of that copper at 2016 prices There are 1.5 x 10^11 liters of water in the pit with concentrations as high as 150 ppm Cu2+ 2016 copper prices: $00.05/g^2

Explanation / Answer

SOLUTION:

1 ppm means = 1g of solute is 1,000,000g of solution

devide both sides by 1000

1 ppm means = 0.001g of solute is present 1000g of solution

or1ppm = 1mg of solute in 1000g of solution

For an aqueous solution

1 ppm = 1mg solute per liter of solution.

Hence 150ppm = 150mg solute in 1L

Therefore 1.5 x 1011 liters at 150ppm concentration will contain 1.5 x 1011 X 150mg = 225 x 1011 mg of Cu2+

225 x 1011 mg of Cu2+ = 225 x 108g of Cu2+ (1mg = 0.001g)

225 x 108 g of Cu2+ = 150000 g2 of Cu2+

Cost of 1 g2 = 0.05$

Therefore cost of 1500002 g = 0.05 $ X 150000 g2 =7500$

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