1. Apr 18, 2009 #1

   babyintel

   

   hi everyone, i have this hw problem that i'm trying to solve. please help me with this cux im not good at chem and i'm really stucked and i need to submit this problem online tomorrow ( 04/19/09 by 11pm .thanks a bunch for your help.
   
   
   How many atoms are present in a 65.0cm^3 sample of plumber's solder, a lead–tin alloy containing 67% Pb by mass and having a density of 9.4 g/cm^3?

    

   babyintel, Apr 18, 2009
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3. Apr 19, 2009 #2

   CompuChip

   

   Science Advisor

   Homework Helper

   Welcome to PF.
   
   I don't know in which time zone you are (it's now 10:20 am here) but that's not a lot of time you have left.
   
   You could start by calculating how many grams of lead and how many grams of tin you have.

    

   CompuChip, Apr 19, 2009

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