parts per million 116 grams of KF is dissolved in enough water to make 4 L of solution
To calculate the parts per million (ppm) of KF in the solution, we first need to calculate the molarity of the solution.
Molarity (M) is defined as the number of moles of solute (in this case KF) dissolved in 1 liter of solution.
First, we need to convert the mass of KF into moles. The molar mass of KF is 58.1 g/mol.
116 g / 58.1 g/mol = 2 moles
Next, we need to calculate the molarity of the solution:
Molarity (M) = moles of solute / liters of solution
Molarity = 2 moles / 4 L = 0.5 M
Finally, we can calculate the parts per million (ppm) of KF in the solution:
ppm = (mass of solute / mass of solution) * 10^6
ppm = (116 g / 4000 g) * 10^6
ppm = 0.029 * 10^6
ppm = 29,000 ppm
Therefore, there are 29,000 parts per million (ppm) of KF in the solution.