Question

express each of these concentrations in parts per million (ppm). 4.0 milligrams per kilogram of water concentration: ppm 4.0 micrograms per kilogram of water concentration: ppm

Explanation:

Step1: Recall ppm conversion

1 ppm = 1 mg/kg.

Step2: Convert 4.0 mg/kg to ppm

Since 1 ppm = 1 mg/kg, for 4.0 mg/kg, the concentration in ppm is 4.0 ppm.

Step3: Convert 4.0 μg/kg to ppm

1 mg = 1000 μg, so 4.0 μg = 4.0/1000 = 0.004 mg. Since 1 ppm = 1 mg/kg, 0.004 mg/kg = 0.004 ppm.

Answer:

4.0 ppm
0.004 ppm