Question

how many atoms of oxyegn are there in 120 g oxygen

Answer 1

Answer:

hey mate here is your answer

Explanation:

● The atomic mass of an oxygen atom = 16g

and in the question magnitude of the oxygen= 120 g

so the no of moles in oxygen atom

= 120/16 = 7.5 mole

in one mole no of atoms of oxygen = 6.022 × 20^23

so in 7.5 mole no of atoms of oxygen =

7.5 × 6.022× 10^23 atoms