In which gas : Helium or sulphur dioxide, the speed of sound is more? Give reason for your answer.
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Answer:
speed of sound is more in helium because it is a noble gas
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Speed of sound
Explanation:
The speed of sound in gases is inversely proportional to the square root of its molar mass. Therefore, speed of sound decreases as molar mass of the gas increases.
Sulphur dioxide has a molecular mass of 64 and helium has a molar mass of 4. So speed of sound is greater in Helium compared to Sulphur dioxide.
Speed of Sound in Helium = 1007 m/s
Speed of Sound Sulphur Dioxide = 201 m/s
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