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Thomas Jefferson Snodgrass found an unlabelled reagent bottle in his -80 C freezer. The Bottle contained a liquid. He found that the compound( compound 1) quickly evaporated when warmed to room temperature. H-NMR of the compound showed only two peaks, one, a triplet, was at .92 ppm and integrated to 6 protons and a second at 1.08 ppm that was a quintet and integrated to 4 protons. Jeff treated the sample with Br2 and light followed by sodium t-butoxide and isolated a new compound( compound 2 which was also a gas at room temperature). NMR of compound 2 showed a doublet at 1.53 ppm that integrated to 6 protons and a quartet at 5.01 ppm that integrated to 2 protons. Treatment of compound 2 with O3 followed by dimethylsulfide and water produced a single compound ( compound 3). An IR spectrum of compound 3 had moderate peaks at 2996, 2836, 2736 and 1114 cm-1 and a strong peak at 1727 cm-1. Use the cluse in the story to identify and draw the structures of compounds 1, 2, and 3.
N2H4+3O2----2NO2+2H2O The limiting reagent is O2 how many kg of NO2 are produced from the reaction of 75kg of the limiting reagent.
The mass of a cube of gold with one side measuring 150. cm is ______ kg. The density of gold is 19.32 g/cm3
Write structural formulas for six, recognizing that the molecular formula may be twice the empirical formula in some of them.
When concentrated sulfuric acid (18.0 M) is added to sodium chloride, hydrogen chloride gas is formed.
identify the oxidizing agent and balance the equation by using oxidation and reduction half reactions.
If a chemistry student collected 834 mL of gas at 25 degrees C and 8.00 x 10^2 torr, how many moles did she collect?
Peaks that appear to the right of 3000 cm-1 in an IR spectrum are characteristic for which stretching vibration
These are characteristics of the titration curve for 25.0 mL of 0.400 M NH3(aq) titrated with 0.335 M HI(aq). (For NH3, Kb = 1.8x10-5.) (1a) The initial pH : (1b) The volume of HI(aq) required to reach the equivalence point
What is the pH of a solution prepared by adding 66.0 ml of 0.100 M HCl to 43.0 ml of 0.200 M NaOH
A 21.40L gas cylinder has been filled with 3.186 moles of gas. You measure the pressure to be 3.260 atm . What is the temperature inside the tank
A gas sample containing 1.60 mol at 25°C exerts a pressure of 391 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the container? ..
The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 520 A is used in the electrolysis cell. What is the rate of formation of aluminum
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