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The formula unit for copper is a single atom. Avogadro's Number is the number of atoms, formula units, or molecules per mole. (3.0 X 1021)/(6.022 X 1023) equals 5.0 X 10-3 moles, to the justified number of significant digits.

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12y ago
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11y ago

A mole of a metal such as copper is generally considered to consist of Avogadro's Number of atoms. Therefore, 3.05 X 1024 atoms constitutes (3.05 X 1024 )/(6.022 X 1023) or 5.06 moles, to the justified number of significant digits.

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14y ago

To do this, you simply need to take the amount of atoms and divide it by Avogadro's constant (one mole) or 6.02 × 1023.

(7.8 × 1021) ÷ (6.02 × 1023) ≈ 0.0130 moles Cu

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13y ago

3.92 X 10^24 atoms of copper (1 mole Cu/6.022 X 10^23)

= 6.51 moles of copper

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13y ago

21.92

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13y ago

24.6

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11y ago

1.3x102

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Q: How many moles are of Cu are there in 3.0x1021 atoms?
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