What would be the total volume in mL after diluting 200 mL of a solution with 100 mL of solvent?

When diluting a solution, the total volume is the sum of the volume of the original solution and the volume of the solvent added. In this scenario, you start with 200 mL of the original solution and then add 100 mL of solvent.

To find the total volume after dilution, simply add these two amounts together:

200 mL (original solution) + 100 mL (solvent) = 300 mL (total volume).

This calculation illustrates that when you mix two liquids, the volumes combine to create a new total volume. Thus, the correct answer is 300 mL, reflecting the addition of both components in the dilution process.