011 10.0 points
A sound wave has a frequency of 634 Hz in air
and a wavelength of 0.47 m.
What is the temperature of the air? As-
sume the velocity of sound at 0°C is 333 m/s.
Answer in units of °C.

Explanation:

The frequency and the wavelength of a wave are related by the equation

where

v is the speed

f is the frequency

is the wavelength

For the sound wave in this problem, we have

f = 634 Hz (frequency)

(wavelength)

Therefore, the speed of the wave is

The speed of sound in air depends on the temperature according to the equation

where T is the temperature.

In this problem, we know the speed, so we can calculate the temperature:

if the concentration of products is decreased, the equilibrium will shift toward the products). add an inert gas (one that is not involved in the reaction) to the constant-volume reaction mixture: this will increase the total pressure of the system, but will have no effect on the equilibrium condition.

explanation: