1. The problem statement, all variables and given/known data An organ pipe is blown with carbon dioxide and produces waves 2 ft long and a note with a frequency if 350 Hz. What is the velocity of sound in carbon dioxide? How do you account for the fact that this is not the same as the velocity in air? 2. Relevant equations Wavelenght=velocity/frequency therefore Velocity=wavelength*frequency. 3. The attempt at a solution Velocity =2ft*350HZ=213.36 m/s My teacher wants the answer in the same units as the question, but 700 ft/Hz doesn't seem like a true meausrement? Which is why I put 213.36 m/s? I am on track here? Also, would this velocity be different than that of air b/c carbon dioxide is heavier and denser than air?