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Chlorofluorocarbons such as CCl3F and CCl2F2 have been linked to ozone depletion in Antarctica. As of 1994, these gases were found in quantities of 261 and 509 parts per trillion (1012) by volume. Compute the molar concentrations of these gases under conditions typical of (a) the mid-latitude troposphere (10°C and 1.0 atm) and (b) the Antarctic stratosphere (200 K and 0.050 atm).
electrons having this speed would need to be treated as waves in atoms because the wavelength is on the order of the size of atoms.
Compare the pH of an H2CO3 buffer (the first buffer) that contains 0.10 M H2CO3 and 0.10 M NaHCO3 with another H2CO3 buffer (the second buffer) that contains 0.15 M H2CO3 and 0.050. M NaCO3 Carbonic acid has a Ka of 4.3X 10^-7
25 ml of naoh 0.16 m is added to 50 ml of 0.1 m hcl. what is the ph of the final solution? what is the concentration of
Explain the fact that even though dibenzoylmethane is not a methyl ketone it gives a positive iodoform test
Sodium hypochlorite, NaOCL, is the active ingredient in household bleach. What is the concentration of hypochlorite ion, if 20.00mL of bleach requires 32.00mL of 0.500 M HCL to reach the equivalence point
Nitrogen and oxygen forms an extensive series of oxides with the general formula NxOy. What is the empirical formula for an oxide that contains 36.85 % by mass nitrogen?
Identify the incorrect names or formulas.
The first atomic explosion was detonated in the desert north of Alamogordo, New Mexico, on July 16, 1945. What fraction of the strontium-90 (t1/2 = 28.8 yr) originally produced by that explosion still remained as of July 16, 1993?
All useless answers. Shouldn't lose points if answers are not helpful. A 0.4863-g sample of primary standard sodium carbonate (Na2CO3, fw 105.988) was treated with 40.00-mL of a dilute perchloric acid (HClO4, fw 100.458) solution.
How many grams of Na3PO4 will be needed to produce 400ml of a solution that has a concentration of Na+ ions of 0.900 ?
A lake contains high concentrations of dissolved Mn^2+ and Fe^2+. a. What can you say about the concentration of dissolved nitrate. b. What can you conclude about the concentration of dissolved oxygen. c. What can you say about the form of any sul..
a 35.00 ml sample of naoh solution is titrated to an endpoint of 14.76 ml 0.4122 m hbr solution. what is the molarity
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