Question

A portable oxygen gas cylinder contains 1.6 kg of oxygen. What is the number of o2 molecules in it?​

Answer 1

Answer:

Explanation:

O2 molecular mass = 2*O = 2*16 = 32

0.32kg of O2 has 6.023*10^23(Avogadro's number) molecules

Then 1.6 kg of O2 contains 'x' number of molecules

x= 1.6*6.023*10^23/0.32

= 5*6.023*10^23

= 30.115*10^23 molecules