What steps are needed to make 250.0 mL of a .20 mol/L solution from solid NaOH? And the molar mass of NaOH is 40g/Mol.

Question

i need "a complete response that includes the required mass of the sample and a set of detailed instructions"

Answer 1

you wish to produce a 0.25 liter solution of 0.2 moles per liter. the product of those two numbers it the number of moles you need to add to that 0.25 liter volume to produce that concentration of 0.2 moles per liter.

.2*.25 = 0.05 moles

0.05 moles of NaOH, which has a molar mass of 40 g/mol would be a mass of 0.05*40 = 2 grams

add 2 grams of NaOH to 0.25 liters water to get 0.2 mol/L