andreanelson1797 andreanelson1797

19-09-2018
Chemistry

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Relatively how much more rapid is the diffusion of hydrogen gas compared to neon gas

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Аноним Аноним

19-09-2018

A colourless obourless gaseous elements that gives a red Glow in a vacuum tube
A. nonmetallic univalent elements that is normal a colourless

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