Question

what pressure is required to contain 0.023 moles of nitrogen gas in a 4.72 L container at a temperature of 105°C

Answer 1

the pressure of the container can be calculated using the ideal gas law equation  
PV = nRT 
where P - pressure 
V - volume - 4.72 L
n - number of moles - 0.023 mol 
R - universal gas constant - 0.0821 L.atm /mol.K
T - temperature in kelvin - 105 °C + 273 = 378 K
substituting the values in the equation 
P x 4.72 L = 0.023 mol x 0.0821 L.atm /mol.K x 378 K 
P = 0.151 atm
pressure is 0.151 atm