Wednesday
December 11, 2013

# Homework Help: chem 5

Posted by pj on Friday, June 14, 2013 at 12:27am.

Calculate the moles of {\rm Cu} in 2.5×1021 atoms of {\rm Cu}.

• chem 5 - bonjo, Friday, June 14, 2013 at 12:56am

1mole = 6.02e23 atoms

how many moles are there in 2.5x10e21 atoms???

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