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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?
A solution is made by mixing 500 ml of .167 M NaOH with 500 ml of .100 M CH3COOH. Calculate the Equilibrium concentrations of H+, CH3COOH, CH3OO-, OH-, and Na+.
For the concentration of hydroxyl radical of 7.5E06 molecules/cm3 and a carbon monoxide concentration of 18 ppm, calculate the rate of its reaction with atmospheric carbon monoxide at 11 degrees C.
10.1 g cao is dropped into a styrofoam coffee cup containing 157 g h2o at 18.0degc. if the following reaction occurs
for the reaction n2g2 o2g2no2g kc is 8.3 x 10-10 at 25 degrees celcius. what is the concentration of n2 gas at
A reaction has a standard free-energy change of -10.60 kJ mol-1 (-2.533 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C
For a certain process at 25 degrees C, deltaG = -2.4 kJ and deltaH = +1.2kJ. Calculate deltaS for the process.
If 8.8 mg of iodine-123 is used in an experiment, how many milligrams of iodine-123 should remain after 50 hours. Assume that iodine-123 has a half-life of 10 hours.
Draw (2R,3R)-2-bromo-3-phenylpentane in the conformation from which it is most likely to undergo E2 elimination to give 3-phenyl-2-pentene.
A solution of I2 was standardized with ascorbic acid. Using a .1000 g sample of pure ascorbic acid, 25.32 mL of I2 were required to reach the starch end point. A. What is the molarity of the iodine solution? B. What is the titer of the iodine solu..
Write the complete mechanism for the formation of Nylon-6,10 using sebacoyl chloride as one of the starting materials. You only have to show the formation of one amide bond
The resulting solution required 12.21 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places
8.5 g of steam at 373 k is added to 305 g of h20 l at 310 k at constant pressure of 1 bar. is the final state of the
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