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Elements and Compounds

Calculate the mass in grams of 0.0420 moles of copper?

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July 13, 2009 12:59AM

You are given moles and need to find grams, the atomic mass of any element is in g/mol so just go to the periodic tables and Cu which is copper has a mass of 63.546 grams/ mole.

Then you know if you multiply Mole * g / mol the moles will cancel out and you will be left with grams

so .0420 mol Cu * 63.546 g / mole Cu = 2.669 grams