What will happen to a hydrogen balloon released on the moon?

A closed bottle containig water 30°C is carried to the moon in sa spaceship.If it is placed on the surface of the moon,What will happen to the water as soon as the lid is opened?

What is the diameter of hydrogen atom?

What will happen when methylene blue is adsorbed an charcoal?

What happens when hydrogen reacts with alkene in presence of carbon monoxide(CO).

What is hydrogen electrode?