Sound and Pitch, frequency, and complex sounds The speed of sound in an ideal g...

Sound and Pitch, frequency, and complex sounds

The speed of sound in an ideal gas is given by the relationship

where R = the universal gas constant = 8.314 J/mol K; T = the absolute temperature; M = the molar mass of the gas in kg/mol; and g is a characteristic of the specific gas. For air, y = 1.4 and the average molar mass for dry air is 28.95 g/ mol. (a) Show that the equation gives you correct units. (b) Give reasons why the temperature of the gas is in the numerator and the molar mass of the gas is in the denominator.