Question

what is the mass of : 0.2 mole of oxygen atoms?

Answer 1

hello ☺

mass of 1 mole of oxygen is 16
( gram molecular weight)

1 mole of atoms weight = 16. 0.2 moles of atoms the weight will be 16X0.2

or 3.2 grams.....

thank you

Answer 2

Moles=given wait /molecular wait ..

So given wait=0.2×16...=3.2gm