The following measurements were made using a Kundt's tube generator as was done in our virtual lab. Distance from node (crest) to node (trough) = 56.5 cm at a frequency of 894Hz. What was the velocity of sound in the tube? Knowing that the standard velocity of Helium is 1007 m/s, Air is 340 m/s and Carbon dioxide is 267 m/s, which gas was in the tube? (Assume all were at the same temperature)