What is the positive side of a battery called?

What is the most stable monatomic ion formed from nitrogen

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 conclusion can you draw from this experiment about the components of the black ink?