Question

if i add 50 ml of water to 125 ml of a 0.18m NaOH solution, what will the molarity of the diluted solution be?

Answer 1

$M_2$ $=$ $M_1V_1\over V_2$

$M_2=$ $(0.18M)(50mL)\over(125mL)$

$M_2=$ $0.072M$