In chemistry a molar solution is a solution with one mole of the compound per litre of distilled, or de-ionised, water. You add the molecular mass -- sometimes called the formula mass or the relative molecular mass (RMM) -- in grams to one litre of the water.
... is a common cause of dysuria[?] (pain when urinating).
Related to urethritis is so called urethral syndrome[?]
Passage of kidney stones through the urethra can be ...