Question

which gases change our voice​

Answer 1

Answer:

Helium is much lighter than air, so sound waves move much faster through the gas. This amplifies the higher frequencies in your voice. The gas sulfur hexafluoride works in the opposite way.

Explanation:

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Answer 2

1. Helium, this gas makes your voice lighter, like a small kid.
2. Hydrogen, this gas makes you voice more heavier, like a monster.

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