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A geochemist is interested in studying the extent of ocean dilution of trace components due to melting glaciers. If normal seawater has a pCa2+ of 5.611 and the projected effects of melting glaciers is a 2.50% change in concentration What is the final pCa2+? Briefly propose a way to measure the calcium concentration.
Would a buffer containing HF and F- in appreciable quantity be expected to have a pH of around 3,5,7 or 9? Justify your answer.
the hybridization of Carbon in this molecule? b) What would be its molecular shape? and c) What is the bond angle around the C atom?
Balance the following electrochemical equation for an acidic environment. NO3- + Cu à NO + Cu2+. Balance the following electrochemical equation for a basic environment. Cl- + Ag+ à Ag + ClO2-
say you removed an ice cube at -10 ordmc weighing 36 g from your freezer. now you place the ice cube in a 90 g sample
In trans-1,2-dibenzoylethylene, even though the conjugated C=O group frequency coincides directly with the expected C=C stretching frequency, we would not have expected to observe the latter stretching mode in the infrared spectrum. Why
How do you prepare 2-Bromo-2-phenylpropane from benzene. Using Alcl3 as one of the reagents and going through an intermediate.
A sodium thiosulfate, Na2S2O3, solution has a concentration of 0.150 M. An end point for this titration occurs when 32.89 mL of the sodium thiosulfate solution reacts with 24.80 mL of I2 solution.
A 0.3146-g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution required 41.80 mL of 0.08765 M AgNO3(aq) to precipitate the Cl-(aq) and Br-(aq) as AgCl(s) and AgBr(s). Calculate the mass percentages of NaCl(s) a..
What is the final pressure in atm of a 3.05 L system initially at 724 mm Hg and 298 K, that is compressed to a final volume of 2.51 L at 273 K?
Given that the most common mineral in limestone is calcium carbonate, describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?
If a wheelchair-marathon racer moving at 13.3 miles per hour expends energy at a rate of 635 Calories per hour, how much energy in Calories would be required to complete a marathon race (26.2 miles) at this pace
Describe the preparation of 12 mL of a 0.050 M solution of each of the halogens, using the reactions in the preceding question. Available to you are solid Ca(OCl)2
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