Because of the strong attractions between polar water molecules.
when carbon dioxide gas is collected down ward of water wet gas is collected by the downward displacement of water . This is used for gases that are not very soluble in water . ... In water , carbon dioxide produces a weakly acidic solution , carbonic acid .
Magnesium in hydrochloric acid forms H2 (hydrogen) gas according to the balanced chemical equation:
Mg + 2HCl→H2 + MgCl2
It is two or more objects and different things that can be removed from each other.
The answer is dissolved in water, because in chemistry, (aq) is shorthand for aqueous solution.