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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. (a) (b) (c) (d) 3. 1.35 x 10-7 m 1.35 x 10-3 m 1.4 x 10-6 m 1.35 m

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1.35 x 10-7 M

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