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  • 15-01-2018
  • Chemistry
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How many atoms are there in 1.45 x 10-17 mol of arsenic?

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d1recruit
d1recruit d1recruit
  • 15-01-2018
1 mole of any substance contains 6.02x10^23 "units" of that substance. This is Avogadro's constant. 

Therefore to find the number of atoms you multiply the number of moles by this number. 
=> 1.45x10^-17 x 6.02x10^23 = 8,730,000 atoms. 

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