The following replicate values were reported for the concentration of magnesium chloride, MgCl2, in mol/L. What value should be reported as the mean concentration of the chloride ion, Cl, converted to ppm? (You may use the simplified definition of ppm.)0.00141, 0.00138, 0.00175, 0.00134, 0.00132F MgCl2

To find the mean concentration of the chloride ion, Cl⁻, converted to parts per million (ppm), we first need to determine the concentration of Cl⁻ in each magnesium chloride solution.

The formula for magnesium chloride, MgCl₂, tells us that there are two chloride ions for every one magnesium ion. This means that to calculate the concentration of Cl⁻, we can divide the concentration of MgCl₂ by 2.

Next, we need to convert the concentration of Cl⁻ into parts per million (ppm). The simplified definition of ppm states that 1 ppm is equal to 1 mg/L (or 1 mg/kg).

Here's how we can calculate the mean concentration of Cl⁻ in ppm step by step:

1. Find the concentration of Cl⁻ in each solution:
- For the first solution: Cl⁻ concentration = 0.00141 mol/L ÷ 2 = 0.000705 mol/L
- For the second solution: Cl⁻ concentration = 0.00138 mol/L ÷ 2 = 0.00069 mol/L
- For the third solution: Cl⁻ concentration = 0.00175 mol/L ÷ 2 = 0.000875 mol/L
- For the fourth solution: Cl⁻ concentration = 0.00134 mol/L ÷ 2 = 0.00067 mol/L
- For the fifth solution: Cl⁻ concentration = 0.00132 mol/L ÷ 2 = 0.00066 mol/L

2. Convert the concentration of Cl⁻ into ppm:
- For the first solution: Cl⁻ concentration in ppm = 0.000705 mol/L × 1000 mg/L = 0.705 mg/L (or ppm)
- For the second solution: Cl⁻ concentration in ppm = 0.00069 mol/L × 1000 mg/L = 0.69 mg/L (or ppm)
- For the third solution: Cl⁻ concentration in ppm = 0.000875 mol/L × 1000 mg/L = 0.875 mg/L (or ppm)
- For the fourth solution: Cl⁻ concentration in ppm = 0.00067 mol/L × 1000 mg/L = 0.67 mg/L (or ppm)
- For the fifth solution: Cl⁻ concentration in ppm = 0.00066 mol/L × 1000 mg/L = 0.66 mg/L (or ppm)

3. Calculate the mean concentration of Cl⁻ in ppm:
- Mean Cl⁻ concentration in ppm = (0.705 + 0.69 + 0.875 + 0.67 + 0.66) / 5 = 0.720 mg/L (or ppm)

Therefore, the mean concentration of the chloride ion, Cl⁻, converted to ppm, is 0.720 mg/L (or ppm).