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elderly | 12:13 Fri 24th Dec 2004 | Quizzes & Puzzles
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Is a oxygen cylinder more heavy when it is full?


Does oxygen actually weigh anything?

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Avatar Image Ray The Grey

Yes it is quite heavy really. It forms the majority of the weight of water and is a constituent in rust.

Air pressure relates to the force of gravity on air molecules (21% of which are oxygen). An oxygen cylinder is a lot heavier as the gas is compressed into liquid form and there are a lot more atoms of oxygen in a cylinder than you would get in air - imagine the difference in weight between water and steam.

12:49 Fri 24th Dec 2004

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