Question

what is the mass of 0.5 mole oxygen gas???​

Answer 1

To calculate the mass of 0.2 moles of oxygen atom we should know the mass of a single atom of oxygen that is 16. -Therefore, the mass of 0.2 moles of oxygen atom is 3.2 grams and the mass of 0.5 moles of a water molecule is 9.0 grams.

Answer 2

Explanation:

Mass of one mole of oxygen atoms = 16 g

Then, the mass of 0.5 mole of oxygen atoms = 0.5 x 16g = 8 g