Question
Asked Oct 5, 2019
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How many copper atoms are in a pure copper statue with a mass of 105kg?

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Expert Answer

Step 1

The value is given as follows:

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mass of copper metal 105 kg =105x103 g

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Step 2

The number of moles of copper metal can be calculated as follows:

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Since molar mass of copper metal = 63.55 g/mol Therefore mass of copper metal molar mass of copper metal moles of copper metal 105 x 10 g 63.55 g/mol 1.6522 x 10 mol

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Step 3

Since, 1 mol of copper metal contains 6.022 x 1023 atoms. Therefore, total number of copper...

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number of copper atoms = (moles of copper metal)x (avogadro number) (1.6522x 10 mol)6.022x 10 atoms 1mol 9.95x1040 atoms

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