Question

Which expression could represent the concentration of a solution

1-3.5 g
2-3.5 M
3-3.5 mL
4-3.5 mol

Answer 1

4-3.5 is the correct answer to the question that you are asking

Answer 2

2- 3.5 M represents the concentration of a solution.

"M" stands for molarity, which is a unit of concentration that expresses the number of moles of solute per liter of solution. Therefore, if a solution has a concentration of 3.5 M, it means that there are 3.5 moles of solute dissolved in every liter of solution.