Top topic this week
Questions asked by users might not always be phrased in the clearest way.
You need 26.7 ml of the 3M HCl solution. Here's how to calculate that:
Moles of HCl needed: 10 ml
8 M = 80 mmol
Volume of 3M HCl solution: 80 mmol / 3 M = 26.7 ml