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You have found two compounds, A and B, in an abandoned government lab. Both compounds appear the same to the naked eye, and are only labeled C7H12O. After extensive tests you determine that the compounds have identical physical properties (e.g., mp, bp, index of refraction), but they appear to be optically active samples that rotate plane polarized light (ppl) in opposite directions with equal magnitude. Reduction of either A or B gives 1-methylcyclohexanol. Hydrolysis of A under acidic and basic conditions gives two different compounds, C and D, respectively, that are optically active, but rotate ppl in opposite directions with equal magnitude. Interestingly, hydrolysis of B under the same two sets of conditions yields the same two compounds, C and D, but with opposite results: basic conditions yields C and acidic conditions yields D. Treatment of either C or D with periodic acid yields the same dicarbonyl compound shown. Finally, treatment of A and B with methylmagnesium bromide followed by acidic workup yields two different compounds, E and F, which are also related by their rotating ppl in opposite directions with equal magnitude, but otherwise have identical physical properties. Treatment of E and F with H2SO4 yields 1,2-dimethylcyclohexene. Based on these observations, provide structures for compounds A through F.
A scientist wishes to compress 50.0 ml of ammonia gas at normal atmospheric pressure to a volume of 1.0 ml. What pressure in atmospheres is necessary?
If 1.00 mole of HI is put into an evacuated 1.00-liter container at 490 degrees C and allowed to reach equilibrium, how much H2 will be present at equilibrium in the reaction H2(g) + I2(g) 2HI, K=45.9 at 490 degrees C?
What is the effective concentration between the ends if you consider the characteristic ratio of dna?
If the speed limit is 75 mph, could the driver of the car reasonably evade a speeding ticket by invoking the Heisenberg uncertainty principle?
CaCN2 + 3H2O -> CaCO3 + 2NH3 . How much NH3 is produced if 187 g of CaCO3 are produced?
what is the volume change when 2 kg of water at 6.8 MPa and 93 Celsius expands to 1.6 bar
The material was used for thermal insulation in the 2003 Mars Exploration Rover. If the maximum space for insulation in the spacecraft's hull was 2294 cm3, what mass (in grams) did the aerogel insulation add to the spacecraft?
A 1-L flask is filled with 1.10 g of argon at 25 C. A sample of ethane vapor is added to the same flask until the total pressure is 1.20 atm . What is the partial pressure of argon,PAr , in the flask?
A weather balloon containing 605 L of He is released near the equator at 1.01 atm and 305 K. It rises to a point where conditions are 0.489 atm
What is the formula that relates the temperature change obsereved in a substance with the energy released or abosrbed? when you measure a temperature rise during a chemical reaction, is the reaction endothermic or exothermic?
When ammonia is added to nickel ions in aqueous solution, the water molecules bound to the Ni2+ are replaced by ammonia molecules.
A sample of oxygen gas at a pressure of 0.996 atm and a temperature of 195oC, occupies a volume of 714 mL. If the gas is cooled at constant pressure until its volume is 544 mL, the temperature of the gas sample will be oC.
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