Medina Munoz
09/28/2024 · Primary School
You have been given 5.00 L of well water and asked to analyze for the presend of arsenic. You test a 75.00 mL aliquot of the water and determine a concentration of \( 1.45 \times 10^{-5} \mathrm{M} \) (in the 75 mL ). (a) How many moles of As are present in the entire 5.00 L of water? (b) What is the concentration (molarity) of As in the well water?
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(a) The total number of moles of arsenic in 5.00 L of water is approximately \( 7.25 \times 10^{-5} \, \text{mol} \).
(b) The concentration of arsenic in the well water is \( 1.45 \times 10^{-5} \, \text{M} \).
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