How many mL of the 3.00 M HCl stock solution is needed to prepare 250.0 mL of a 1.10 M HCl solution?

91.7 mL are needed to prepare the diluted solution

Explanation:

When you dilute a determined solution the molarity and the volume for both solutions (diluted and concentrated), are the same.

M concentrated. Concentrated volume = M diluted. Diluted volume

3 M. Concentrated volume = 1.10 M. 250 mL

Concentrated volume → (1.10 M. 250 mL) / 3M = 91.7 mL