Question

from 320 mg of O2 X mg of O2 is removed if 6.02×10^20 molecules of O2 are left then X will be​

Answer 1

Oxygen is a diatomic molecule= O2 = (16x2) = 32 g in one mole

 

As we know,

 32 g of O2 =1 mol = 6.023x1023

 Therefore, 320mg = 0.32g = 0.01 mol = 6.023x1021

  From this, 6.023x1020 moles are removed = 0.001 moles

 Therefore remaining moles are 0.01-0.001 =0.009 moles remain

Answer 2

Answer:

9× 10^-3 moles

Explanation:

hope it helps