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<p>[QUOTE=&quot;-jeffB, post: 2920581, member: 27832&quot;]I&#039;d say a coin-size volume of hydrogen won&#039;t cause much damage, even if it&#039;s ignited all at once. Even if it&#039;s mixed in the optimal proportion with pure oxygen, you wouldn&#039;t get more than a loud pop.</p><p><br /></p><p>I say this as a former chemistry hobbyist who&#039;s heard <i>lots</i> of those pops. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie2" alt=";)" unselectable="on" unselectable="on" /></p><p><br /></p><p>I&#039;d be a bit more cautious with the fluorine coin, if they were ever foolish enough to produce them...[/QUOTE]</p><p><br /></p>

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