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-   -   How do I calculate moles? (https://www.askmehelpdesk.com/showthread.php?t=655670)

  • Apr 29, 2012, 03:54 PM
    maraanthony
    How do I calculate moles?
    I can't find out how to answer my question.

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

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