When inhaling helium, the speed of propagation of the voice increases
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When inhaling helium, the speed of propagation of the voice increases, resulting in a thinner sound. This is due to the lightness of the gas, which is approximately 7 times lighter than air made up of 78% nitrogen (N2). On the other hand, inhaling a denser gas would cause the voice to propagate at a lower speed, which would make it more serious.
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