Can water be manafactured by combining Hydrogen and Oxygen.?
Make water that way? Not just possible. Easy. We have a short word that means “rapidly combines with oxygen, producing energy”. The word is “burns”. When hydrogen burns, the result is water, usually in the form of steam. Rockets that burn hydrogen work that way. Hydrogen fuel cells work that way. It’s one thing that makes hydrogen a very attractive fuel — the only “ash” from burning it is plain water steam. But, manufacture water that way? That doesn’t sound practical. It’s much easier and cheaper to find available water on this planet than it is to find available hydrogen. Unless hydrogen somehow becomes cheaper than the water it makes, there’s no point in manufacturing water that way. Nah, it’d be more practical to take available water and use that to manufacture fuel-grade hydrogen.