Question

Convert into mole

(a)20 g of water. (b) 64g of O2​

Answer 1

Answer:

1.11 mole and 4 moles.

Explanation:

n=w/m

1. 20 g of water:

w=20g m=18g

Therefore, n=w/m=>20/18=1.11 moles

2. 64g of O2:

Same logic here,

w=64g , m=16g

Therefore, 64/16=4 moles.