150 degrees celcius
No, but is asphyxiant
They are both diatomic gases. Hydrogen will explode in oxygen to produce water.
Hydrogen basically means "water maker" in Greek, because it forms water when burned."Hydro" means water, "gen" means generate. When hydrogen is burned, it produces water (vapor).
Can react to form ammonia NH3. They do react only under specific conditions.
Yes, hydrogen gas is an ideal gas.