1. The problem statement, all variables and given/known data another satII chem question: Forty grams of sodium hydroxide is dissolved in enough water to make 1 liter of solution. What is the molarity of the solution? (A) 0.25 M (B) 0.5 M (C) 1 M (D) 1.5 M (E) 4 M 2. Relevant equations Molarity = (number of moles of solute) / (1 L of solution) 3. The attempt at a solution well, i converted 40 g of NaOH to moles so... 40 g NaOH x (1 mol NaOH) / (40 g NaOH)= 1 mol so... Molarity = (1 mol) / (1 L) = 1 M but the book says the answer is (A) & their explanation is... NaOH is 40 g/mol. 10 g is 10/40 or 0.25 mol in 1 L or 0.25 M i have no idea, how they're getting the 10. and would appreciate any help at alll. thank you so much guys also; if anyone knows how to insert division signs to make the presentation look ANY better, because right now it looks messy!...i was trying to use the underline thing, but the formatting got all messed up!