Question

Calculate the molar mass of naoh and the mass of solid naoh needed to prepare 250 ml of 0.1 m naoh solution

Answer 1

its a 3.0m solution so 1 litre of solution contains 3 moles of NaOH, 250ml of solution contains 0.25x39.9971 g/mol, so 250ml of this solution contains 0.75x39.9971=29.99g, or if you round it up 30.0g