Is NH3(aq) equivalent to NH3(aq) + H2O(l)? or NH3(l) + H2O(l)?
Not exactly, NH3(l) means liquid ammonia. But NH3(aq) + H2O(l) technically doesn't differ from NH3(aq).
So in a chemical formula it might help to write it as NH3(aq) + H2O(l)? I thought you use NH3(l) because it would be an aqueous solution when mixed with water.
No, (l) means liquid. Think liquid nitrogen - N2(l). Think liquids that are not miscible with water.
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