Question

Toxaphene is a pesticide that was applied to cotton crops. If 1.5 kg of toxaphene is applied to 1000 m3 of soil and the soil density is 1700 kg/m3 , Determine the toxaphene concentration in the soil in units of ppm.

Answer 1

Answer:

0.882 ppm is the toxaphene concentration in the soil

Explanation:

One relation of units for ppm is mg/kg

Let's determine the mass of soil with the density.

Soil density = Soil mass / Soil volume

1700 kg / m³ = Soil mass / 1000 m³

1700 kg / m³ . 1000 m³ = Soil mass → 1.7×10⁶ kg

Let's convert the mass of toxaphene to mg

1.5 kg . 1 mg/ 1×10⁻⁶ kg = 1.5×10⁶ mg

1.5×10⁶ mg / 1.7×10⁶ kg = 0.882 ppm