Question

The densities of several gases at the same temperature are listed below. Considering only density, waves should travel fastest in which gas? Gas Density helium 0.09 kg/m3 hydrogen 0.2 kg/m3 oxygen 1.4 kg/m3 radon 9.7 kg/m3 helium oxygen radon

Answer 1

With the given options, waves can travel faster in helium as it has the lowest density, which is 0.09 kg/m3.

Answer 2

The answer is helium 0.09 kg/m³.

The wave will move faster in the gas that is having lowest density.

As comparison to other gases-hydrogen, oxygen and  radon; helium has the lowest density that is 0.09 kg/m³.

So, waves will move fastest in helium gas as it is having lowest density.

So the answer is helium gas that is waves will move fastest in helium gas.