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Atmospheric CO2 level seem to have risen by around 20% over the past 40 years from 315ppm to 375ppm. (a) specified that the average pH of clean, unpolluted rain today is 5.4, find out the pH of unpolluted rain 40 years ago. You may presume that carbonic acid (H2CO3) formed by the reaction of CO2 and water is the only factor affecting pH by the reaction CO2(g) + H2O(l) <===> H2CO3(aq); (b) define what volume of CO2 at 25oC and 1 atm is dissolved in a 20.0-L bucket of today's water?
Define what values of J may occur in the terms (a) 1S, (b) 2P, and (c) 3P? Explain how many states distinguished by the quantum number Mj belong to each level
What would be the hybridization for a molecule with a central atom that is bonded to 5 peripheral atoms and that has 3 nonbonding valence
Styrene, phenylethene, is treated with H3PO4, an acid whose conjugate base is a poor nucleophile.
A urine sample was found to have a pH of 5.83. What would be the ratio of the unprotonated form, A, to the protonated form, HA, for uric acid in this urine sample?
Design a synthesis of 4-(carboxymethyl)-nitrobenzoic acid starting with benzene and any other necessary reagents
Small quantities of oxygen can be prepared in the laboratory by heaing potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3 arrow 2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 26.6 grams of KClO3(s)
Suppose Precipitation of the mononitration product of bromobenzene prevents dinitration from occurring. Define how this experimental result is an application of the Le Chatelier principle.
Explain why do you see distinct lines when metal salts are burned however see a continuous spectrum when observing sunlight or light from an overhead projector
The refractive indices at 20o C of isobutyl bromideand isobutyl choloride are 1.4368 and 1.3785 respectively.Determine the molar composition (in percent) of the mixture byassuming a linear relationship
assume you dissolve .297 g of the weak acid benzoic acid in enough water to make 105 mL of solution and then titrate the solution with .141 M NaOH. What are the concentrations of Na+ at the equivalence point?
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
The mass spectrum of an organic compound shows the relative abundances of M to be 60.70% and M 1 to be 15.76%. Assuming the peaks are caused by 12C and 13C isotopes, determine the number of carbon atoms in the compound.
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