Answer:
[tex]0.30\text{ mol}[/tex]Explanation:
Here, we want to get the number of moles in the given number of molecules
Mathematically, 1 mole of a substance has:
[tex]6.02\text{ }\times\text{ 10}^{23}\text{ molecules}[/tex]The number of moles in the given number of molecules would be:
[tex]\begin{gathered} \frac{1.78\text{ }\times\text{ 10}^{23}\text{ molecules}}{1\text{ }}\text{ }\times\frac{1\text{ mole }}{6.02\text{ }\times\text{ 10}^{23}\text{ molecules}} \\ \\ =\text{ 0.30 mole} \end{gathered}[/tex]