Question

Question 6

How many mole of potassium hydroxide are in 27.5 mL of 0.250 M
potassium hydroxide solution?

Answer 1

0.00688 moles

Step-by-step explanation:

The molarity ratio looks like this:

Molarity = moles / volume (L)

After you convert mL to L, you can plug the values into the equation and simplify to find moles.

27.5 mL / 1,000 = 0.0275 L

Molarity = moles / volume <----- Molarity ratio

0.250 M = moles / 0.0275 L <----- Insert values

0.00688 = moles <----- Multiply both sides by 0.0275