Question

How many moles of solute particles are present in 1 mL (exact) of aqueous 0.0040 M Ba(OH)2?

Answer 1

4.0 x 10^-6 moles

Step-by-step explanation:

0.0040 M Ba(OH)2 means there is .0040 moles per liter

you want 1 ml which is 1/1000 liter so you get 1/1000 of the moles

= .0000040 moles