# 2. The density of copper is 8.97 g/cm3. What is the volume, in mL, of a 1.00 kilogrammass of pure copper?3. Why is copper plumbing used in our homes but not aluminum plumbing?4. The average human needs 2.0 mg of copper ions, Cu2, per day in their diet. This ishow many copper ions?5. Copper is extracted from the ore, chalcopyrite, CuFeS2. How many kilograms of a0.862% chalcopyrite ore will be necessary to produce 1.00 kg of pure copper? Thepercentage of copper in chalcopyrite needs to be known to work this problem.111

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Question 2

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Step 1

Given information:

Density of copper = 8.97 g/cm3

Mass of pure copper = 1.00 kg

Step 2

As the mass is given in kg but density is in g so, mass will be converted into g as follows:

1 kg = 1000 g

Step 3

Density is defined as mass per unit volume.

Thus, the vo...

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