Question

what will be the number of oxygen atoms in 3.2 gm of o2​

Answer 1

Answer:

m=3.2g

M=2×16=32g

Na=6.022×10^23

N=?

Step-by-step explanation:

As we know,

N/Na=m/M

N=3.2/32×6.022×10^23

N=6.022×10^22 molecules

since 1molecule of O2 contains 2 oxygen atoms

hence,

no. of oxygen atoms = 6.022×10^22×2

=1.2044×10^23 atoms