Answer:
[tex]3.72mol[/tex]
Explanation:
Hello,
In this case, we consider that at STP conditions (273 K and 1 atm) we know that the volume of 1 mole of a gas is 22.4 L, thereby, for 83.4 L, the resulting moles are:
[tex]22.4L\rightarrow 1mol\\83.4L\rightarrow X\\X=\frac{83.4L*1mol}{22.4L}=3.72mol[/tex]
This is a case in which we apply the Avogadro's law which relates the volume and the moles as a directly proportional relationship.
Best regards.