I believe a is 2.41x10^5 L/s using viscous conductance, but I am unsure about this. I believe you have to use molecular conductance for part b but I am confused about that as well.

3. There are two cylindrical tubes (each 5 cm in length) leading into a common, 100 liter vacuum chamber. One tube has a diameter of 2 cm. The other tube has a diameter of 0.5 cm. The viscosity of nitrogen at 760 Torr and 0 deg. C. is 166 micropoise. a) (10 points) calculate the total conductance (in l/sec) for pumping the system containing only nitrogen, if the inside pressure is 1 torr and the outside pressure is 760 Torr. b) (10 points) calculate the total conductance (in l/sec) for pumping the system containing only nitrogen, if the inside pressure is 10-9 torr and the outside pressure is 10-6 Torr. 1001 volume 2 cm diam. Pump P = 1 torr 0.5 cm diam. - 6 P = 10 torr 1001 volume 2 cm diam. Pump Pa = 10 torr 0.5 cm diam