If solution A has a higher concentration than solution B and both solutions have the same total volume, then solution A must contain a greater amount of the solute compared to solution B.
To put it simply:
- Concentration is defined as the amount of solute per unit volume of solution.
- If the total volume of the two solutions is the same but one has a higher concentration, it means that the quantity of solute in solution A is greater than that in solution B.
Therefore, under the given conditions, solution A has a higher total mass or amount of solute compared to solution B.