Hello, I'm curious to find how much work is released by hydrogen explosion. My method is by making a projectile launched vertically by hydrogen's explosion. Take the highest peak that the projectile launched, multiply it by the projectile's mass and gravity which should yield the maximum potential and thus the maximum work right? If the idea above is correct, then here's my other question. Is it possible to use spark plug similar to car engine to ignite pure hydrogen in a closed container? Thanks.