Question

What is the mass of:-
0.2 mole of O₂ atoms.​

Answer 1

Answer:

That is it weighs 16 g. ∴

Mass of 0.2 mole of O2 atoms = 16*0.2 = 3.2 u.

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Answer 2

mass of 1 mole of O2 atm .16 gm

Mass of 0.2 mole of atoms 0.2×16=>>3.2 gm