Question

0.386 g of magnesium Sulfate is dissolved in water to make a 824 kg solution. Express the concentration in ppm.

Answer 1

0.386 g = 386 mg

$\frac{386 \;mg}{824\;kg} = 0.468 \;mg/kg$

1 ppm = 1 mg/kg

Answer: 0.468 ppm