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We learned that four new molecular orbitals are created from the p orbitals for each carbon atom in the butadiene molecule (the axes perpendicular to the page). Which statement about these molecular orbitals is NOT true?
A. The four molecular p orbitals of the four carbon atoms can be lined up parallel in order to create four new molecular orbitals.
B. The electrons in the new molecular orbitals benefit because they are not confined to just one atom.
C. The electrons, because of the new molecular orbits, are spread out over the entire molecule.
D. As a result of the new molecular orbitals, the bond between the second and third carbon atoms is not really a single bond. In fact, the bond should be shorter.
The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.
Metallic aluminum reacts with MnO_2 at elevated temperatures to form manganese metal and aluminum oxide. A mixture of the two reactants is 67.2% mole percent Al.
The activation energy of the orginal pathway is 106 KJ/mol. What is the activation energy of the new pathway, all other factors being equal?
At 30°C, by how much is a reaction's activation energy decreased by the addition of a catalyst if the catalyst triples the reaction rate?
What is the minimum amount of 5.2 M H2SO4 necessary to produce 23.0 g of H2? according to the following reaction. 2Al(s)+3H2SO4(aq)-->Al2(SO4)3 (aq)+3H2(g)
Write out the balanced overall equation for the redox reaction that could occur between these species. An electric current would have to have what minimum potential to force the reaction forward?
Why is it preferable to use a metal ion buffer to achieve pM = 7, rather than just dissolving enough M to give a 10-7 M solution?
The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name and origin imply, it stinks!
what accounts for the large amount of ring strain in cyclopropane and cyclobutane? (Hint: what bond angle does an sp^y hybridized carbon prefer? What angles are necessary for each of the geometric shapes you are building?)
if a sample of 4.17 L of ethane gas at 725 C is cooled to 175 C at constant pressure, what is the new volume?
has a rate constant k= 1.10 x10^-14 at 470 degrees C and an activation energy of 264 kJ/mol. What is the temperture of the reaction when the rate is constant is equal to 4.36 x 10^-3s^-1?
Consider the following mechanism for the oxidation of bromide ions by hydrogen peroxide in aqueous acid solution
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