What is the pressure exerted by a mixture of 18.0 grams of N2, 60.0 grams of C/2, and 12.0 grams of He in a 30.0-liter container at 30 °C?
a.2.47 atm
b.6.80 atm
c.14.1 atm
d.4.66 atm
e.3.72 atm