How do I calculate moles?

maraanthony Posts: 1, Reputation: 1

New Member

Apr 29, 2012, 03:54 PM

How do I calculate moles?

I can't find out how to answer my question.

How many moles are in 40.0g of pb?

kevhall999 Posts: 3, Reputation: 1

New Member

Apr 29, 2012, 04:07 PM

40/207 (207 = molecular mass of pb)
= 0.193 Moles

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