Question

How many oxygen atoms are present in 96 g of ozone?

Answer 1

Hint: Oxygen atom is represented by the symbol O and have atomic number 8 and known as the lifeline for all living organisms and ozone is represented by the trioxygen atom i.e. three oxygen are combine to form ozone gas which is shown as ${{O}_{3}}$.

Complete answer:
To calculate the number of oxygen atoms in 96 g of ozone we first have to know about the Avogadro number where Avogadro number can be defined by the concept of mole where a mole of a substance or particle can be defined as containing exactly $6.02214076\times {{10}^{23}}$particles and after that we have to calculate the number of moles,
Where number of moles can be calculated by the formula:
$\dfrac{Given\ mass}{Molar\ \text{mass}}=\dfrac{96}{46}=2.08$
Then number of molecule is given by the product of the number of moles into Avogadro number i.e. $6.02\times {{10}^{23}}$atoms
Number of molecules of oxygen = $2.08\times 6.022\times {{10}^{23}}$
1 molecule of ozone contain 3 oxygen atoms
Hence we can say that the number of oxygen atoms is thrice the number of ozone molecules.
Number of atom of oxygen = $3\times 2.08\times 6.022\times {{10}^{23}}=37.70\times {{10}^{23}}$
Hence we can say that $37.70\times {{10}^{23}}$ oxygen atoms are present in 96 g of ozone

Note:
Atomic number and mass number are always whole numbers because these are calculated by counting whole objects i.e. protons, neutrons, and electrons. The sum of the mass number and the atomic number for an atom corresponds to the total number of subatomic particles present in the atom.