I added 6 to a certain number and then divide the result by 3. Find the number if my final answer is 5. (show working)

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

Answer explain why it is not possible to deduce a complete order of reactivity.