Question

How many moles of o2 are there in 1.20×10`22 oxygen molecules

Answer 1

ANSWER:

there are[ (1.20×10⁻²²)/Nₐ] moles of O₂   where, Na=6.023×10²³

             =[(1.20×10⁻²² )/6.023×10²³]

             =1.992×10⁻⁴⁶