Question

Calculate the mass of 12.044 x10 20 molecules of oxygen?





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Answer 1

Answer:

One mole of O2 = 32 gm

6.022 × 1023 molecules of O2 have mass = 32 gm

So, 12.044 × 1025 molecules of O2 will have mass = 6400 gm = 6.4 Kg