KurobaAme KurobaAme

21-11-2016
Chemistry

Answered

What is the mass of 3.01 x 10^23 molecules of oxygen?

Verified Answer :

Anonymous Anonymous

21-11-2016

Oxygen is gas. It has 2 O atoms. Atomic mass of 1 O atom is 16 amu. So molecular mass of O2 = 2 x 16 = 32 amu.
Now, mass of 6.023 x 10 ^23 = 32 amu.
Therefore mass of 3.01 x 10^23 = 32 x 3.01 x 10^23 / 6.023 x 10 ^23 = 15.99
= ~16 gm

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