Substances dissolving in water?

please help! Which of the following substances dissolves in water?

- aluminum

- hydrochloric acid

- copper

-hydrogen

thanks!

Answer:
hydrochloric acid (HCl) dissolves almost all of the way. Hydrogen partially dissolves (but VERY VERY little). The others don't really dissolve.
hydrocchloric acid dissolves in water. Try it at home!!!
HCl

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