One US barrel is about 160 liters, which equals 160 kgs.
“...can convert 1 barrel of water into 200 kg of hydrogen”
Not only did they create hydrogen out of oxygen, they created about 40kgs of hydrogen out of NOTHING.
I’d like to see how that works.
I was wondering the same thing - they don’t specify the size of a “barrel”, but charitably assuming it’s a 55-gallon drum, not a 42-gallon oil barrel, they claim to get 440 lbs of hydrogen from 412 lbs of water.
Somehow circumventing the Law of Conservation of Mass.