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A collected sample from a waste water treatment plant was analyzed by a portable type analyzer showing the concentration of Lead (pb) 0.28 ppm. Calculate its molar concentration. Atomic mass of Lead (pb) is 207 .2 g/mol.
Accepted Answer
The molar concentration can be calculated using the formula: Molar Concentration = (Concentration in ppm * 10^-6 g/mL) / Molar Mass
Here, the concentration in ppm is 0.28 ppm, which is equivalent to 0.28 mg/L or 0.28 * 10^-6 g/mL. The molar mass of lead (Pb) is 207.2 g/mol.
Plugging these values into the formula, we get:
Molar Concentration = (0.28 * 10^-6 g/mL) / 207.2 g/mol
= 1.35 * 10^-9 mol/mL
Therefore, the molar concentration of lead (Pb) in the wastewater sample is 1.35 * 10^-9 mol/mL.
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