Agas mixture contains 0.150 mol of oxygen (o2) gas, 0.419 mol of nitrogen (n2) gas. and 0.211 mol of argon (ar) gas in a 0.250 l flask at 298 k. what is the total pressure of the mixture?

Hey There!:

Total number of moles of gases:

0.150 + 0.419 + 0.211 => 0.780 moles

Volume = 0.250 L

Temperature = 298 K

Using the ideal gas law:

p*V =  n*R*T , putting all the values we get :

p * 0.250 = 0.780 * 0.0821* 298

p* 0.250 = 19.083

p = 19.083 / 0.250

p = 76.3 atm

Hope That helps!

- aluminum and copper chloride.

- the chloride ion to separate the aluminum from the oxygen so that the aluminum can react with the copper ions (and the water molecules).