Answer:
[tex]\large \boxed{\text{0.0980 mol/L}}[/tex]
Explanation:
The formula for molar concentration c is
[tex]c = \dfrac{\text{moles}}{\text{litres}}\\\\\text{Moles} = \text{12.3 g} \times \dfrac{\text{1 mol}}{\text{162.97 g}} = \text{0.0755 mol }\\\\\text{Litres} = \text{770. mL} \times \dfrac{\text{1 L}}{\text{1000 mL}} = \text{0.770 L }\\\\c = \dfrac{\text{0.0755 mol}}{\text{0.770 L}} = \text{0.0980 mol/L }\\\\[/tex]
