Question

What is the pressure in a 27.5-L cylinder filled with 37.4g of oxygen gas at a temperature of 343K ?

Answer 1

Use the ideal gas law formula: \(\sf \color{orange}{PV = nRT}\) and then divide by volume, which solves for pressure.
Also, don't forget to convert 37.4 grams of O\(_2\) \(\rightarrow\) mol of O\(_2\). You need moles, \(n\), to use the formula:

P = pressure
V = volume
n = moles of gas
R = ideal gas constant
T = temperature.