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Q: How many copper atoms are in a pure copper statue with a mass of 129 kg?

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1.26 X 10^27

17.48 atoms

17.48 atoms

1.20 × 1024 atoms

This depends on the mass of this penny.Number of atoms = [(Mass of the coin) x 6,022.10e23]/63,546.

The mass of 4 copper atoms is 4,2208.10e-22.

5.18 X 1023 : The gram atomic mass of copper is 63.546, and by definition Avogadro's Number of atoms is contained in the gram atomic mass. Therefore, the number of atoms in the stated mass is (54.6/63.456) X 6.022 X 1023.

The mass of copper is 78,17 g.

10.5 * 10^-21

Because copper has a smaller molar mass, hence it will have less mass per mole than lead.

2.11x10^24 atoms... Divide by Avogadro's Constant (6.02x10^23 particles/mole) Gives you moles of copper... Multiply by the molar mass of copper. (?? g/mol) Gives you grams of copper...

1 kg Copper = 1000 g Copper1000 g copper x 1 mole copper/63.5 g x 6.02x10^23 atoms/mole = 9.48x10^24 atomsAnswer would be 9x10^24 atoms to 1 significant figure

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