Question

A sample at chlorine gas is confined in a 5.0-L container at 328 torr and 37 degrees celcius. How many moles of gas are in the sample.

Answer 1

You can use the ideal gas law to calculate this: \(\sf \color{red}{PV = nRT}\)

If you remember from algebra, you can rearrange this equation to solve for "\(n\)" which is moles.
P = pressure
V = volume
n = mole
R = ideal gas constant
T = temperature

make sure that ALL your units are consitent with the ideal gas law constant that you use. Generally, the constant: \(\sf \color{blue}{0.00821 \frac{L~atm}{mol~K}}\) is the R value used.