Question

A nitrogen molecule has a diameter of about 0.29 nm. The mean free path of a nitrogen molecule in a tank of dry nitrogen at room temperature (293 K) and standard pressure (1 atm) is about 0.10 µm. A tank containing nitrogen at standard temperature (273 K) and pressure has volume V. If the tank is compressed by means of a piston to 20% of its original volume, what is the mean free path for a nitrogen molecule under the new conditions?

Answer options are

• 0.125 µm

• 0.020 µm

• 0.080 µm

• 0.112 µm

Answer 1

Mean free pah d= At Temperatide T=273K, pat Pp 2 100=5 20 201.V Satin : SP;=5x1atn = Pe = T, Pz Salin 293 0.1 dz 273 d2=0.020 piñ option Cerset