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Answer to Question #58199 in Other Chemistry for Kainat

Question #58199
The concentrations of arsenic (As) and selenium (Se) in a drinking water well were 2.0 and 3.8 ppb. (a) Convert arsenic concentration into ppm and mg/L, (b) Convert selenium concentration into molarity (M) and micro-molarity (mM), (c) Have the concentrations exceeded the maximum contaminant level (MCL) of 50 mg/L for both elements? The atomic weight of Se is 79.
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