Answer:
A 3.1 M solution contains 3.1 moles of solute dissolved in 1 liter of solution.
The M in 3.1 M refers to molarity.
The concentration of a 3.1 M solution may also be expressed as [tex]\frac{mol}{L}[/tex] and would be expressed in [tex]\frac{mol}{dm^{3} }[/tex]
Explanation:
The molarity reflects the concentration of a solution indicating the amount of moles of solute that appear dissolved in each liter of the solution.
[tex]M=\frac{solute moles}{solution volume}[/tex]
Although various units can be used, it is usual to use [tex]\frac{mol}{L}[/tex], equivalent to [tex]\frac{mol}{dm^{3} }[/tex]. This unit is usually expressed as a molar, with an M as a symbol.
