Question
Wed August 29, 2012 By: Jayagopal Tr Thoppil Raman

CALCULATE THE NUMBER OF F ATOMS PRESENT IN 1.9 * 10 TO THE POWER OF -6 g OF F2 . [F=39]

Expert Reply
Mon September 03, 2012

19 /6.023 x1023 g of F2 has 2 atoms

1 g contains = 2 x 6.023 x1023 /19

1.9 x 10-6 g contains = 1.9 x 10-6 x2 x 6.023 x1023 /19 = 1.2 x 10 17 atoms of F
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