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puffin0516 puffin0516
wrote...
Posts: 41
10 years ago
I've been working on these two problems for the past hour
Q#1 : How many moles are 2.9 * 1012 fluorine atoms?
Is this correct?
A)  2.9 X 1012 / 6.022 1023 X 19.00 = 9.1 X 10-11


2) What is the mass of 2.50 x101212  PbO units?


I know that the total mass for PbO = 223.2
Do I divide that into 2.50x1012 ??

any insight would be appreicated
THANK YOU
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wrote...
10 years ago
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