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3 February, 03:17

How many moles of gold atoms are in 2.8 x 10 21 atoms of gold?

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  1. 3 February, 03:30
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    Therefore, 1 mole of gold weighs 196.9665 grams. So, in 2.8 grams of gold we would have:

    (2.8 gram) (1 mole/196.9665 gram) = 0.0142 mole.

    From Avogadro's number, we know that there are approximately 6.02 x 1023 atoms/mole.
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