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You work for a large urban water company. A pipe has broken in a recycling plant and flooded the inside of the building. The company recycles batteries, fluorescent lights, and electronic equipment, so hazardous levels of silver, mercury and lead ions may have contaminated the floodwaters.
You are the only person in the department who has had college chemistry, so your supervisor has asked you to devise a procedure to test the waters for the presence of AG^+, Hg^2+, and/or Pb^2+ ions. This procedure is to be written in a step-wise fashion, so that a technician in the water qualify laboratory will be able to follow it. Also an explanation of each step should be given. Why would you do that? What does it accomplish? How does it accomplish the separation and/or identification of a particular ion? Samples of the food waters have already been collected and are already waiting in the laboratory for you. You will follow your procedure to test a sample for yourself during your scheduled lab time.
Assuming that the water is contaminated, devise a method for disposing of the contaminated water without contaminating the environment, but allowing the recycling plant to resume operations as soon as possible.
water to give a solution that has a vapor pressure of 37.2 torr at 35 °C? Assume complete dissociation of the solute and ideal solution behavior
Containers of rubbing alchohol and ammonia are opened simultaniosly in a room. Which will you smell first and why?
Bismuth oxide reacts with carbon to form bismuth metal: Bi2O3(s) + 3C(s) --> 2Bi(s) + 3CO(g)
If the gas is at 24 degrees Celsius and 1.0 atm, what mass of helium is in the blimp?
Reaction of methanoic and ethanoic acids with CaCO3, If I have a 1 liter aqueous solution that contains 15 mg/L methanoic acid and 15 mg/L ethanoic acid
Write a chemical equation describing the condensation process for CO2 and a chemical equation describing the freezing process for CO2. For each process discuss the change in enthalpy and entropy that occurs.
A 50.0 mL sample of 0.55 M benzoic acid, C6H5COOH, a weak monoprotic acid, is titrated with 0.47 M NaOH. Calculate the pH at the equivalence point. Ka of C6H5COOH = 6.5 10-5
calculate the purity of the ammonium chloride in the sample.
If 555 g of NaOH is dissolved to a final total volume of 40.0 L, what is the molarity of the solution?
the molecular orbital theory provide an explanation for the existence of the covalent molecule Na2 in the gaseous state. How would you predict Na2 by the Lewis theory?
a piston has an external pressure of 10.0 atm. How much work has been done is the cylinder goes from a volume of 0.180 liters to 0.630 liters
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
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