Question

what is the mass of: 0.5 mole of water molecules?​

Answer 1

Answer:

Mass of 0.5 mole of water is 9g.

Explanation:

We know that mass of 1 molecule of water,

H2O with 1 oxygen and 2 hydrogen atoms is

Atomic mass of hydrogen x 2 + Atomic mass of oxygen

⇒1×2+16

thus, mass of 1 mole of water = 18g

So, mass of 0.5 mole of water is given as

⇒m=0.5×18

⇒m=9g

Mass of 0.5 mole of water is 9g.