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Draw a molecular orbital for 1,3,5,7-octatetraene. Make sure to include labels, relative energy, bonding/antibonding character, # of electrons and HOMO and LUMO.
An endothermic chemical reaction with ?E = +41 kJ/mol has an activation energy of +95 kJ/mol. What is the activation energy for the reverse reaction
if a 5.0ml aliquot (portion) of the above solution was taken and diluted to 500.0mL. What is the concentration of this new solution
the three naturally occurring isotopic forms of k are 39k 38.963707u 40k 39.363999 u and 41k. the percentage natural
An air sample contains 0.034% . If the total pressure is 765 , what is the partial pressure of
maleic anhydride gives a compound A that undergoes acid-catalyzed dehydration to give 3,6-dimethylphthalic anhydride.
3.64 g of calcium hydroxide react with excess sodium sulfate in aqueous solution to produce solid sulfate and aqueous sodium hydroxide. How many moles of calcium atoms are reacting ?
What volume of gaseous chlorine at STP would you need to obtain a 250.0 g sample of gas
How many milliliters of 0.105 M HCl are needed to completely neutralize 60.0 mL of 0.108 M Ba(OH)2 solution?
Calculate the heat capacity of the bomb (Cbomb) given that under constant volume conditions the specific heat of combustion of benzoic acid is 26,434 J.g?1.
High-purity benzoic acid (C6H5COOH; change H (rxn) for combustion = -3227 kj/mol) is used as a standard for calibrating bomb calorimeters. A 1.221-g sample burns in a calorimeter
The enthalpy of fusion of water is 6.0 kJ/mol and the heat capacity of ice is 36.5 J/mol C. How many kJ of heat is given off when 5 mol of liquid water at 0 °C is frozen to ice at !10 °C
At 80 °C the vapor pressures of pure liquids X, Y, and Z are 385, 190, and 66 mm Hg, respectively. What pressure must be exerted on the surface of a solution
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