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Originally Posted by zigx
How do you use zinc to make signups?
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Here's one for you.
Two peices of galvanised metal in a sealed beaker, with a tube going to a ballon.
Have the beaker half filled w/ salty warm water.
Place a decent current through the water.
You'll collect hydrogen in your balloon. I used to do this as a kid, every weekendit was like a mini hindenburg disaster, lol.