>1) Can hydrogen be stored in a water heater tank?

I think I would be tempted to try and pump it into an old propane tank. It
would need drying first though, but then a small pump like the ones you can
get for pumping up car tyres, that operate off the car cigarette lighter,
claim to be able to reach quite reasonable pressures.

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist