Answer:
[tex]n=0.78mol[/tex]
Explanation:
Hello there!
In this case, according to the given information, it possible for us to realize that this problem is solved via the ideal gas equation:
[tex]PV=nRT[/tex]
By which we solve for n (moles) as shown below:
[tex]n=\frac{PV}{RT}[/tex]
Then, we plug in the given pressure, volume and temperature (in K) to obtain:
[tex]n=\frac{3.85atm*5L}{0.08206\frac{atm*L}{mol*K}*(273+27)K} \\\\n=0.78mol[/tex]
Regards!