Explanation:
The ideal gas law is written as [tex]PV=nRT[/tex]
where [tex]P,V,T[/tex]are the pressure, volume and temperature,[tex]n[/tex] is the number of moles of gas; and [tex]R[/tex] is the ideal gas constant. It is the same for all gases.
Given,[tex]P=672 mm of Hg=0.8842 \text{ atm}[/tex]
[tex]V=36.52L[/tex]
[tex]T=[/tex][tex]68^{0} C=[/tex][tex]341.15K[/tex]
[tex]R=0.0821\text{ atm L }moles^{-1}K^{-1}[/tex]
Since,[tex]n=\frac{PV}{RT} =\frac{0.8842\times 36.52}{0.0821\times 341.15}=1.15\\[/tex]
So,the number of moles is [tex]1.15[/tex]
