Hey guys I need some help on some chemistry questions (any help will help) 1. Is it more correct to write H+ (aq) or H3O+(aq)? Explain. Now, as far as I know, these both mean the same thing, but we'd prefer to write H+ to help understand pH level right? I'm not too sure. 2. In words, what is the mass of 1 mole of any molecule? The mass of one molecule is avagadros number right? 3. How many milliliters of 1.0 M HCL have to be added to neutralize 50 mL of 0.25 M NaOH? I have not a clue where to start, if someone could tell me a formula, or get me started on this, I may be able to finish it. Much thanks!