If \( 3.0 \mathrm{mg} \) of \( \mathrm{Cr}^{+6} \) is dissolved in ...

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If \( 3.0 \mathrm{mg} \) of \( \mathrm{Cr}^{+6} \) is dissolved in \( 3 \mathrm{~L} \) of water, find the
P concentration of \( \mathrm{Cr}^{+6} \) in \( \mathrm{ppm} \).

W
(A) \( 2 \mathrm{ppm} \)
(B) \( 1 \mathrm{ppm} \)
(C) \( 3 \mathrm{ppm} \)
(D) \( 9 \mathrm{ppm} \)
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