Lead is the least toxic to fish compared to zinc, copper, and mercury ions. Fish can tolerate a lead concentration slightly above 0.850 mM. What is this concentration in ppm? Assume the density of the water is 1.00 g/mL.

Question

Quizplus · Accepted Answer

To convert mM to ppm, use the formula: ppm = (mM) * (molar mass of lead in g/mol). The molar mass of lead (Pb) is approximately 207.2 g/mol. Thus, 0.850 mM * 207.2 g/mol = 176.12 ppm, which rounds to 176 ppm.

Lead Is the Least Toxic to Fish Compared to Zinc