A rigid chamber with the dimensions 50 cm x 50 cm x 80 cm is filled with Argon. A Buordon gauge installed in the chamber shows 100 psi gauge pressure and thermometer shows 25 oC. 1. How many moles of argon are in the chamber? R = 0.08206 L atm mol K R = 62.36 L mmHg mol K R = 62.36 L torr mol K R 8.314 L kPa mol K