What is the molarity of a stock solution if 60 mL were used to make 150 mL of a. 5M solution

The answer to your question is 1.25 M

Explanation:

Data

Molarity 1 = ?

Volume 1 = 60 ml

Molarity 2 = 0.5 M

Volume 2 = 150 ml

Process

1. - Write the dilution formula

Molarity 1 x Volume 1 = Molarity 2 x Volume 2

-Solve for Molarity 1

Molarity 1 = Molarity 2 x Volume 2 / Volume 1

-Substitution

Molarity 1 = (0.5) (150) / 60

-Simplification

Molarity = 75 / 60

-Result

Molarity = 1.25 M