Understanding Molarity

Molarity (M) is a unit of concentration that tells you the number of moles of solute per liter of solution.

The Formula

We can use the following formula to relate molarity, moles, and volume:

Molarity (M) = Moles (mol) / Volume (L)

Solving for Volume

1. Rearrange the formula:

Volume (L) = Moles (mol) / Molarity (M)

2. Plug in the values:

Volume (L) = 0.150 mol / 4.00 M

3. Calculate the volume:

Volume (L) = 0.0375 L

Converting to Milliliters (mL)

Since 1 L = 1000 mL, we can convert the volume to milliliters:

0.0375 L * (1000 mL / 1 L) = 37.5 mL

Answer:

You would need 37.5 mL of a 4.00 M HCl solution to contain 0.150 mol of HCl.