Answer :
The concentration of the solution containing 36.6 g of KCl in 430.3 mL is 1.14 M. This is the main answer.
To find the concentration of a solution, we need to calculate the molarity, which is the number of moles of solute per liter of solution.
Step 1: Convert the mass of KCl to moles.
To do this, we need to know the molar mass of KCl. The molar mass of KCl is 74.55 g/mol (potassium has a molar mass of 39.10 g/mol, and chlorine has a molar mass of 35.45 g/mol).
To find the number of moles of KCl in the solution, divide the mass of KCl by its molar mass:
36.6 g / 74.55 g/mol = 0.491 moles of KCl.
Step 2: Convert the volume of the solution to liters.
The volume of the solution is given as 430.3 mL. To convert it to liters, divide by 1000:
430.3 mL / 1000 mL/L = 0.4303 L.
Step 3: Calculate the concentration (molarity).
The molarity (M) is defined as moles of solute divided by liters of solution. Divide the number of moles of KCl by the volume of the solution in liters:
0.491 moles / 0.4303 L = 1.14 M.
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