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View Full Version : How do I calculate moles?

maraanthony
Apr 29, 2012, 03:54 PM
I can't find out how to answer my question.

How many moles are in 40.0g of pb?
kevhall999
Apr 29, 2012, 04:07 PM
40/207 (207 = molecular mass of pb)
= 0.193 Moles