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RE: About the third most abundance gas in lab -- 在實驗室使用豐度第三高的氣體
Well, on the TV show mythbusters they made that experiment, I don't remember what kind of gas they used (probably just air) or what pressure but it went trought a concret wall easy, it probably could be an interesting experience in a lab haha.
This is really scary!!!! The cylinder probably even heavier than me!!