Question

9. What is the mass of: (a) 0.2 mole of oxygen atoms? (b) 0.5 mole of water molecules?​

Answer 1

Answer:

mass of mole of oxygen atoms = 0.2x16=3.2

mas of one mole of water molecule= 0.5x18=9

Answer 2

Answer:

Ans. (a) 0.2 mole of oxygen atoms: Mass of Im oxygen atoms = 16 g

Mass of 0.2 mole of oxygen atoms

= 0.2 x 16= 3.2g

(b) 0.5 mole of water molecules :

Mass of 1 mole of water molecule

(H₂O) = 18 g

Mass of 0.5 mole of water molecules

= 0.5 x 18= 9g

Hope it helps you!!!!