Question

what is the mass of 0.2 moles of oxygen atom .

Answer 1

$\bold\red{ANSWER!!!}$

The atomic mass of oxygen (O) = 16 u. The mass of 1 mole of oxygen atoms = 16g. Hence, 0.2 mole of oxygen atom = 3.2 g.

Answer 2

Answer:

The atomic mass of oxygen (O) = 16 u. The mass of 1 mole of oxygen atoms = 16g. Hence, 0.2 mole of oxygen atom = 3.2 g.