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High altitude balloons used by Environment Canada to measure O3 levels in the atmosphere also use a similar idiometric titration where the iodine liberated is measured by back titration with sodium thiosulfate. In this case the iodine is generated by oxidation of iodide by ozone:
If 10,000 L of air were bubbled through an acidic iodide solution (at STP) and was then back titrated with 19.4 mL of a 1.2 ´ 10-4 M Na2S2O3 solution to reach equivalence, what is the concentration of ozone in that sample of air (in ppm)?
Draw the boundary surface diagrams for the following atomic orbitals, including the appropiate axes.
How does the anatomy these various phyla of organisms accomplish feeding, removal of bodily waste, gas exchange (breathing), and mating?
A mixture of the compounds aluminum sulfide and aluminum oxide contains 27.2 g of aluminum and is 14.5 % by mass aluminum oxide. The compound aluminum sulfide is 35.9 % by mass aluminum.
Calculate the pH of a buffer that contains 0.060M ammonium chloride and 0.075M ammonia. The Ka of ammonium is 5.6 x 10^-10.
Explain on the basis of structure why the products of a saponification reaction are soluble in water whereas the starting fat is insoluble.
You then remove 24.9 mL of this solution and dilute it to 656.0 mL to create Solution B. You then determine that Solution B has a molarity of 0.00042. What was the concentration of Solution A
An unknown metal M reacts with sulfur to form a compound with the formula MS. If 4.37 g of M reacts with 2.51 g of S, what are the names of M and MS. (Type your answer using the format iron(II) sulfide for FeS.)
In an electrolysis cell similar to the one employed in this experiment, a student observed that his unknown metal anode lost 0.238 g while a total volume of 84.90 mL of H2 was being produced.
A 4.00 g sample of an aluminum-copperalloy reacts with excess hydrochloric acid. The 2.81 L of H2(g) produced is collected over water at a barometric pressure of 758.4 mmHg and 19°C. What is the mass percent of aluminum in the alloy
The wavelength corresponding to threshold frequency to tungsten surface is 230nm . Calculate the kinetic energy of the photoelectron ejected from the surface of tungsten metal.
How many moles of gas are in a container that is 2.00 L, at 30.0 atm and a temperature of 25.0 C?
Calculate the molarity of a solution made by adding 21.7 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask
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