Answer:
1.68 M (Molar) or 1.68 mol/L (moles per liter).
Step-by-step explanation:
To calculate the concentration of a solution, we use the formula:
concentration = amount of solute ÷ volume of solution
In this case, the amount of solute is given as 5.7 moles of NaCl and the volume of the solution is given as 3.4 liters of water. So we can plug in these values into the formula to get:
concentration = 5.7 moles ÷ 3.4 L
Simplifying this expression, we get:
concentration = 1.68 M
Therefore, the concentration of the solution is 1.68 M (Molar) or 1.68 mol/L (moles per liter).