What is the speed of sound in helium at a temperature of?
Michael Henderson
Published Feb 10, 2026
What is the speed of sound in helium at a temperature of?
Selected Sound Speeds in Gases
| Gas | Temperature (°C) | Speed in m/s |
|---|---|---|
| Air | 20 | 344 |
| Hydrogen | 0 | 1270 |
| Carbon dioxide | 0 | 258 |
| Helium | 20 | 927 |
How does room temperature affect speed of sound?
Temperature is another condition that affects the speed of sound. Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly. The speed of sound at room temperature air is 346 meters per second.
Is the speed of sound faster in helium?
Thus, a sound wave will travel nearly three times faster in Helium than it will in air. This is mostly due to the lower mass of Helium particles as compared to air particles.
What is the speed of sound at room temperature?
346 meters per second
The speed of sound in room temperature air is 346 meters per second. This is faster than 331 meters per second, which is the speed of sound in air at freezing temperatures. v is the speed of sound and T is the temperature of the air.
What is the speed of sound in helium at 25 degrees Celsius?
Speed of sound in helium at 25 degree celcius is. 346m/s.
Why is the speed of sound in helium faster than air?
The speed of sound in helium is faster than in air because the helium is lighter than air. Sulfur hexafluoride makes your voice sound very low because sound travels slower in heavy gases.
At what temperature does sound travel the slowest?
At freezing (0º Celcius), sound travels through air at 331 meters per second (about 740 mph). But, at 20ºC, room temperature, sound travels at 343 meters per second (767 mph).
Which temperature is most favorable for sound to travel faster?
Does air temperature affect the speed of sound? Kim Strong, a professor of physics at the University of Toronto says the answer is yes, in fact sound travels faster when the air is hotter. At 25 C, the speed of sound is 1,246 kilometres per hour.
Why does the speed of sound increase in helium?
Helium is significantly less dense than air. As a result, the speed of sound is much higher in helium.
How do you find the speed of sound in helium?
For the specific example of dry air at 20°C, the speed of sound in air is 343 m/s, while the rms speed of air molecules is 502 m/s using a mean mass of air molecules of 29 amu. vsound in helium = m/s = ft/s = mi/hr.
What is the speed of sound at 22 degrees Celsius?
The speed of sound in dry air at 22 °C is 344.632 m/s.
What is the speed of sound at 37 degrees Celsius?
Approximate speed of sound In a given ideal gas the speed of sound depends only on its temperature. Celsius is c = 331.3 m/s.
