Posted by **paula** on Friday, April 22, 2011 at 12:17pm.

quarters are 91.67% mass/mass copper and 8.33% mass/mass nickel. if the average quarter weighs 5.67 grams, how many atoms of nickel are in a quarter?

- chemistry -
**DrBob222**, Friday, April 22, 2011 at 6:41pm
See your post above.

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