If you inhale helium from a balloon and do your best to speak normally, your voice will have a comical quacky quality. Explain why this ?Donald Duck effect? happens. Caution: Helium is an asphyxiating gas and asphyxiation can cause panic. Helium can contain poisonous contaminants.
DATE
Question answered on Jul 22, 2018
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Solution~000637588.zip (18.37 KB)
