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A small community has used an unchlorinated well water supply containing approximately 0.3 mg/l of iron and manganese for several years without any apparent iron and manganese problems. A health offical suggests that the town install chlorination equipment to disinfect the water and provide a chlorine residual in the distribution system. After initiating chlorination, consumers complain about water staining washed clothes and bathroom fixtures. Explain what is occuring due to chlorination.
Gold (Au) crystallizes in a cubic close-packed structure (the face-centered cubic unit cell) and has a density of 19.3 g/cm3. Calculate the atomic radius of gold in picometers.
If 27.0 mL of 0.0200 M KMnO4 were required to titrate a 0.425 g sample of K3[Fe(C2O4)3] * 3H2O, what is the % purity of the complex?
A 100.0-mL buffer solution is 0.175M in HCIO and 0.150M in NaCIO .What is the pH after addition of 150.0mL of HBr?
In the spring of 1996 five tank cars containing propane (molar mass = 44.09 g/mol) derailed in Weyauwega, WI forcing evacuation of the town for over a week. Residents within a square mile of the accident site were unable to return to their homes f..
The heat of vaporization, ?Hvap, of a certain liquid at 25oC is 11.8. kJ/mol. If one mole of the liquid has an entropy of 164 J/K, what is the entropy of one mole of the vapor in equilibrium with the liquid at this temperature
If 0.334 g of water was obtained from the equation N*M H2O ?N + M H2O, how many grams of the hydrate were heated
when 9.00 g of Al react with an excess of H3PO4, 30.0 g of AlPO4 are prodecued. What is the percentage yield of this reaction?
Analyzing a new reaction Consider the following elementary steps that make up the mechanism of a certain reaction: 2X -> Y + Z Y + L -> M + Z Part A What is the overall reaction
a reaction has a standardfree-energy change of -13.00 kj mol -1 -3.107 kcal mol -1 calculate the equilibrium constant
What would the energy diagram look of a triple carbon hybrid. Using the model below what is available.
How many molecules of water are produced when 143 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water.
What is the maximum mass of water that can be released by heating a 8.904 g sample of nickel(II) sulfate heptahydrate?
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