Question

.. How many moles of O2 are there in 1.20 x 102 oxygen molecules ?​

Answer 1

Answer:

Explanation:

One mole of oxygen contains 6.022 × 1023 molecules.

1.20 × 1022 molecules of oxygen contain = 1.20 × 1022 / 6.022 × 1023 = 0.01099 moles.

Hence, 1.20 × 1022 molecules of oxygen contain 0.0199 moles of oxygen.

Answer 2

Explanation:

1mole = 6.022×10^23 molecules

=1.2*10^22 molecules=1*1.2*10^22

6.022*10^23 molecules

= 0.019 moles

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