A copper ore contains 3.00% of copper carbonate, CuCO3, by mass. Which mass of copper would be obtained from 1 tonne of the ore? A 1.91kg B 3.71kg C 15.3kg D 58.4kg

(c) 15.39 kg of copper present in 1tonne of ore.

Explanation:

We are given that ore contains 3% of copper carbonate

1tonne = 1000kg

3% of copper carbonate in 1000kg of ore will be

= = 30kg

30 kg of copper carbonate is present in ore

CuCO3 has 63.5g of cupper present in it

molar mass of CuCO3 = 123.5

so the percentage of copper present in CuCO3

= = 51.3% of copper present per kg CuCO3

Now

amount of copper present in 30kg of CuCO3

= = 15.39kg

15.39 kg of copper present in 1tonne of ore

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