Step-by-step explanation:
The mass of the solution is 0.0133 g + 821.5 g = 821.5133 g.
The ratio of the mass of the solute to the mass of the solution is: 0.0133 g ÷ 821.5133 g = 0.00001616
To convert this ratio to ppm, we multiply by 1,000,000: 0.00001616 × 1,000,000 = 16.16 ppm
Therefore, the concentration of magnesium chloride in the solution is 16.16 ppm (parts per million), rounded to one decimal place.