The extraction of pure copper is expensive. Give one reason why
2 answers:
The ore contains some metals which need alot of energy to get out and energy is expensive
Because it requires lots of electricity to turn it into an aqueous solution so that electrolysis can be performed on it.
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The answer is C, I believe.
Answer:
1.
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2.
6CO2+6H2O——>C6H12O6+6O2
varying composition is not a property of a pure substance
There is no molecular change
Answer:
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Explanation:
