In 1866, the German scientist Adolph Kundt developed a technique for accurately measuring the speed of sound

Question:

In 1866, the German scientist Adolph Kundt developed a technique for accurately measuring the speed of sound in various gases. A long glass tube, known today as a Kundt€™s tube, has a vibrating piston at one end and is closed at the other. Very finely ground particles of cork are sprinkled in the bottom of the tube before the piston is inserted. As the vibrating piston is slowly moved forward, there are a few positions that cause the cork particles to collect in small, regularly spaced piles along the bottom. FIGURE P17.53 shows an experiment in which the tube is filled with pure oxygen and the piston is driven at 400 Hz.
What is the speed of sound in oxygen?

Piston Glass Piles of cork tube partiçles 400 Hz 123 cm FIGURE P17.53