Answer:
0.05 mol HCl or n = 0.05 mol
Explanation:
Molarity (M) is the number of moles within a volume of solution.
First we must convert mL to Liters by dividing by a factor of 1,000 as that is the conversion rate of mL to L. We convert from mL to L as that is the measurement we use in calculating pretty much anything else.
This leaves us with 0.5 L.
Since M = n/v we can rearrange the equation to n = M x v. So, n = 0.10 x 0.5.
We end up with the answer: 0.05 mol HCl
