8. L qual mumbers of moles of (O((g),N2(g). and NH,{g) are placed in a sealed vessel at room Iemperature. If the vessel has a pinhole-sire leak, which of the following will be true after some of the gas mixture has efrused? 1. The mole fraction of CO3 in the sample will ncrease II The N, will effuse the fastest since it is the lightest. III All gases will effuse at the same rate since the temperature is held constant. a. I and III b enly III c. 1,11 and 111 d. II and III e only