Answer : The number of atoms present are,

Explanation : Given,
Moles of
= 0.35 mole
As we know that, 1 mole of substance contains
number of atoms.
In
, there 1 atom of carbon and 2 atoms of oxygen. So, the total number of atoms in
are, 3.
As, 1 mole of
contains
number of atoms.
So, 0.35 mole of
contains
number of atoms.
Therefore, the number of atoms present are,
