A 2.90 L sample of water contains 217.5 μg of Lead (II) ions. Calculate the concentration of lead in ppm.
A) 7.5 X 10‐1 ppm
B) 7.5 X 10‐2 ppm
C) 7.5 X 10‐3 ppm
D) 7.5 X 10‐4 ppm
E) 7.5 X 10+4 ppm
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