Answer: 1.38 moles
Explanation: According to Avogadro's law, 1 mole of every substance contains Avogadro number of particles (atoms, molecules or ions) i.e. [tex]6.023\times 10^{23}[/tex] particles.
Given : 1 mole molecule of water contains [tex]6.023\times 10^{23}[/tex] molecules of water.
[tex]6.023\times 10^{23}[/tex] molecules are present in = 1 mole
[tex]8.30\times 10^{23}[/tex] molecules will be present in =[tex]\frac{1}{6.023\times 10^{23}}\times 8.30\times 10^{23}=1.38 moles[/tex]
Thus [tex]8.30\times 10^{23}[/tex] molecules is equal to 1.38 moles.
