Question

Which item does not contain a noble gas? neon sign, helium balloon, flash camera, mp3 player

Answer 1

Neon is a noble gas so not that

Helium is a noble gas so no

Flash camera, tricky but I’m POSITIVE that the tubes of the flash part got some argon to increase bulb life

MP3 player, probably this

I wouldn’t recommend trusting me but hey why not

Answer 2

Answer:

mp3 player

Explanation: