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The analysis of Ca2+and Mg2+in urine samples could be performed in a way similar to the EDTA analysis of the calcium content in water. For example, a 25.0 mL aliquot of a urine sample (buffered to pH = 10.0) required 17.2 mL of 0.0776 M EDTA to react with all of the Ca2+and Mg2+ions in the sample. Then another identical 25.0 mL urine sample was analyzed, except this one was treated with NaOH to precipitate all of the Mg2+from the solution. This second solution required 13.2 mL of the 0.0776 M EDTA to react with the Ca2+ions. Report the moles of Ca2+and Mg2+in the urine
If 45.2 mL of 0.116 M HCl solution is needed to neutralize a solution of KOH, how many grams of KOH must be present in the solution
The fluorescence spectrum of anthracene vapor in the figure shows peaks with maxima at 440 nm, 410 nm, 390 nm, and 370 nm, whereas the absorption spectrum has peaks at 360 nm, 345 nm, 330 nm, and 305 nm.
One sample had a mass of 25 grams. The other had a mass of 50 grams. Would the same number of particles be ejected from each sample in the first hour?
In a reaction involving reactants in the gas state, how does increasing the partial pressures of the gases affect the reaction rate
30.0 ml of 0.10 m cano32 and 15.0 ml of 0.20m na3po4 solutions are mixed. after the reaction is complete which of these
if 100 ml of 3m hcl is spilled on a lab bench, what is the minimum mass od sodium bicarbonate that must be used to neutralized the acid?
If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original mixture?
How did Regan cutting exploration of renewable energies have a long-term impact on our ability to remove our dependence on oil?
We find coesite and stishovite in shocked Coconino Sandstone at meteor Crater. We infer that coesite and stishovite formed from the transformation of quartz at high pressure and temperature.
A sample system consists of argon confined in a cylinder with a movable piston. Moving the pistion inward uses 24.9J. 15.6J of heat are produced and dissipated to a surrounding water jacket.
Illustrate a detailed, "curved arrow" mechanism for the acid-catalyzed acetylation of an alcohol (ROH) using acetic anhydride. Utilize H3O+ to represent the acid. Illustrate every step of the mechanism.
The next three (3) problems deal with the titration of 461 mL of 0.501 M carbonic acid (H2CO3) (Ka1 = 4.3 x 10-7, Ka2 = 5.6 x 10-11) with 1.1 M NaOH. What is the pH of the solution at the 2nd equivalence point
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