What is IMnaoh?

Answer 1

I think you are misreading I for 1. it is one molar concentration of NaOH, or sodium Hydroxide. To make mix 40 grams with enough water to make a liter.

Answer 2

It seems like "IMnaoh" is not a standard term or acronym. If you could provide more context or information, I may be able to offer a more accurate explanation or assistance.