Chemistry Homework Solutions
#145833
The concentraion of lead from mine tailings that are worked into the ground is calculated.
Lead from mine tailings containing 0.6 % lead was applied at a rate of 12 metric tons per acre of soil and worked in to a depth of 20 cm. The density of the soil is 1.8 g/cm3. To what extent does this add to the burden of lead in the soil? (There are 640 acres per square mile and 1609 meters in a mile.)
a) 19 ppb
b) 45 ppb
c) 19 ppm
d) 49 ppm
The concentration of lead in soil after mine tailings are worked into the ground is calculated from mass, area and soil depth data.
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