If 16 g of oxygen contains 1 mole of oxygen atoms, calculate the mass of one atom of oxygen. 

Posted by pratham srivastav (Jan 12, 2017) (Question ID: 1312)

  • Answers:
  • Ans.

    Molar mass of a substance is a mass of 6.023 X1023 molecules.

    Molar mass of Oxygen molecule i.e N is 2 X 8 = 16 g.

    Thus 6.023 X 1023 molecules weigh = 16 g

    1 molecule of Oxygen weighs = 16/6.02 X 1023 = 2.66 X 10-23 g

    Answered by Naveen Sharma (Jan 12, 2017)
    Thanks (2)
  • Ans. The mass of 1 atom = Gram atomic mass of atom/ 6.022 × 1023

    So, the mass of 1 atom of oxygen = Gram atomic mass of oxygen atom/ 6.022 × 1023 = 16g/ 6.022 × 1023 =

    2.66 × 10-23 g

    Answered by Payal Singh (Jan 12, 2017)
    Thanks (1)
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