Would the speed of sound in a monatomic gas like helium be the same as it...

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Physics

Would the speed of sound in a monatomic gas like helium be thesame as it would be in air (primarily a diatomic gas)? Why? Assumethat both gases have the same density and exist at the samepressure.

Yes. If the pressure and density of both gases are the same,then the speed of sound must be the same.

No. The energy that goes into molecular bonds in the diatomicgas makes the effective spring constant of the gas different fromthat of the monatomic gas.

No. It is impossible for both gases to have the same density, sothe speed of sound cannot possibly be the same in differentgases.

Yes. The oscillating medium in each case can be approximated tobe the same.

Answer & Explanation Solved by verified expert
3.6 Ratings (252 Votes)
According to the NewtonLaplace equation speed of sound in gasesis given bywhere adiabatic constantPpressure of gasddensity of gasFor same pressure    See Answer
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