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Question: Draw structures for all the stereo-isomers of 1,2-diaminocyclohexane (You do not need to show chair conformers for this part of the problem). Assign R and S configuration to each of the stereocentres in your structures. Circle all the isomers that are optically active.
Assuming that the bath contains 250.0 g of water and that the calorimeter itself absorbs a negligible amount of heat, calculate combustion energies (delta E) for benzene in both kilojoules per gram and kilojoules per mole.
Suppose that the molar concentrations for CO and H2 at equilibrium are [CO] = 0.05 M and [H2] = 0.08 M. Use the formula Kc[CO][H2]^2 to calculate the concentration of . Express your answer to one decimal place and include the appropriate units.
2.30 moles of an ideal gas with molar heat capacity at constant volume of 12.47 J/K*mol is expanded irreversibly and adiabatically from an initial pressure of 10.0 kbar against a constant external pressure of 1.00 bar to a final pressure of 50.0 b..
Demonstrate that the operator G=id/dθ (partials) is Hermitian if θ spans the angularrange from 0 to 2π radians (integrate the integral by parts to show that it equals ).
Calculating concentration in equilibrium, At pH 6.00 and pE 2.60, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
Consider barium hydroxide, Ba(OH)2, a white powdery substance. Student A prepares a solution of Ba(OH)2 by dissolving 4.23 g of Ba(OH)2 in enough water to make 455 ml of solution.
Calculate the potential of the cell be if the mass of the Iron (Fe) electrode (MW = 55.85 g/mol) is 62.0 g?
The thallium (present as Tl2SO4) in a 9.043 g pesticide sample was precipitated as thallium(I) iodide. Calculate the mass percent of Tl2SO4 in the sample if 0.3524 g of TlI was recovered.
Suppose you analyze a sample of fertilizer by the procedure of this experiment and obtain 1.000g of MgNH4PO4 * 6H20. Calculate the equivalent mass of P2O5 initially in the sample.
Imagine that you have a 7.00 gas tank and a 4.50 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
a 2.0l kettle contains 116g of boiler scale caco3. how many times would the kettle have to be compleletly filled with
The standard free energy of activation of another reaction B is 78.70 kJ mol-1 (18.81 kcal mol-1). Assume a temperature of 298 K and 1 M concentration. By what factor is one reaction faster than the other. Which reaction is faster
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