saltenhofen91 saltenhofen91
  • 04-05-2017
  • Chemistry
contestada

how many moles of Cu in 7.81 * 10^21 atoms of Cu

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JavierCollante
JavierCollante JavierCollante
  • 04-05-2017
Use avogadro's number---> 6.02 x 10^23 atoms= 1 mol

7.81 x 10^21 (1 mole/ 6.02 x 10^23)= 0.0130 moles of Cu
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