What is the thickness of the sheet (in mm)? 32m 74 a. b. If the density of coppe

Question

What is the thickness of the sheet (in mm)? 32m 74 a. b. If the density of copper is 8.96 g/cm2, what is the mass of the rectangular sheet? b: 8.by Cen) ak 14. A miner discovers a large quantity of gold-colored rocks in a ravine, but does not know whether it is pyrite ("fool's gold") or gold. He drops a sample into a graduated cylinder and discovers that it displaces 1.23 mL of water. If the sample has a mass of 21.7123 g will the miner become rich or stay poor? Justify, if you know that pyrite has a density of 5.01 g/cm', and gold has a density of 19.3 g/cm

Explanation / Answer

Ans 14

Volume displaced = 1.23 mL

Mass of metal = 21.7123 g

Density of metal = mass/volume

= 21.7123 g / 1.23 mL

= 17.6523 g/mL x 1mL/1cm3

= 17.6523 g/cm3

The above calculated density is close to the given density of gold (19.3 g/cm3)

The miner will become rich.

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