Calculate the rms (average) speed of NF3 atoms or molecules at 202 oC. Use R = 8.314 kg-m2/K-s2-mol for the value of the gas constant. a) The average speed of a NF3 atom/molecule at 202 oC is 167 m/s. b) The average speed of a NF3 atom/molecule at 202 oC is 408 m/s. c) The average speed of a NF3 atom/molecule at 202 oC is 218 m/s. d) The average speed of a NF3 atom/molecule at 202 oC is 12.9 m/s. e) The average speed of a NF3 atom/molecule at 202 oC is 8.42 m/s.