February 28, 2017

Homework Help: chemistry

Posted by Sarah on Sunday, October 3, 2010 at 2:53pm.

A nickel has a mass of 5.000 grams and is composed of 25% nickel and 75% copper. What is the mass of copper in the nickel? How many moles of copper are in this nickel? How many copper atoms are in this nickel?

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