1. At 450 K and 150 atm, a certain gas obeys the van der Waals equation with a=4.1 Latm mol-2 and b = 0.042 L mol-l. Under these conditions the molar volume, in L, is A) 25.0 B) 0.25 C) 0.16 D) 16.0 E) I can't solve this problem because I don't know how to solve a cubic equation