Answer:
0.0238 moles NaOH
Explanation:
To find the amount of moles, you need to
(1) convert the volume from mL to L (1,000 mL = 1 L)
(2) calculate the amount of moles (using the molarity equation)
It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs.
125.0 mL NaOH 1 L
--------------------------- x --------------------- = 0.1250 L NaOH
1,000 mL
Molarity = moles / volume (L) <----- Molarity equation
0.190 M = moles / 0.1250 L <----- Insert values
0.0238 = moles <----- Multiply both sides by 0.1250
