In the vast expanse of space, where stars are born and planets take shape, one molecule plays a crucial role in interstellar ...

Wait until a while ring of solid ammonium chloride forms where the hydrogen chloride and ammonia gases meet. The ammonia gas, having a lower molecular weight than the hydrogen chloride, will diffuse ...

When writing chemical equations for reversible reactions ... can break down to form ammonia and hydrogen chloride. It also shows that ammonia and hydrogen chloride (colourless gases) can react ...