How Would 250ml Of 0.15M kno3 solution be preared

Answer 1

You want how many moles? That's M x L = 0.15 M x 0.250 L = ? mols.
Then mols = grams/molar mass. You know moles and you know molar mass, solve for grams.
Add that many grams of KNO3 to a 250 mL volumetric flask, add some distilled H2O, swirl until all of the KNO3 is dissolved, make to the mark on the flask with distilled H2O, stopper, mix thoroughly, label. Done.

Answer 2

3.79g

Answer 3

O.0375mol

Answer 4

By dissolving 3.77 g KNO3 in enough water unite the volume of the solution in 250 ml.

;- 3.77 g