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which is more deshielding to surrounding protons, a carbon double bonded to oxygen (a carbonyl group) or a benzyl substituent?
The energy levels of a Helium Ion, He+, may be calculated from the Bohr Theory using z = 2 for the atomic number, En = -1312.04 Z2/n2 or En=-5248.16/n2 (kJ mol-1) for n=1, 2,3,.... Calculate the first 4 energy levels of He+
What is the freezing point of water under a pressure of MPa? Assume that the density of ice is 0.915 g.cm^-3 and that of liquid water
What is the potassium ion concentration in a 2.5 m k2so4 aqueous solution
If the tank was actually pressurized such that the top surface of milk was at a pressure of 123.0 kPa, what was the actual height of milk in the tank?
Calculate the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3 (Kb = 1.8x10-5)
An aqueous NaCl solutions is made using 112 g of NaCl diluted to a total solution volume of 1.0 L. Calculate the molarity, molality and mass percent of the solution
Why is tetraphenylporphyrin (TPP) so stable? Why is it planar? Why does it precopitate so easily?
Determine the change in Ssys for the process if the specific heat capacity for ethanol = 2.42 J/g K. express your answer in units of J/K
The standard enthalpy change for the reaction below is 436.4 kJ/mol. Calculate the standard enthalpy of formation of atomic hydrogen (H). H2(g)-->H(g) + H(g)
A radioactive isotope may change a proton into a neutron in an attempt to become more stable. While doing so, a particle is emitted from the nucleus of that isotope.
What is the white precipitate that forms while the reaction mixture is heated. The reaction is the hydrolysis of the ester Butyl benzoate yields products 1-butanol and benzoic acid.
a proton in a linear accelerator has a de broglie wavelength of 144 rm pm. what is the speed of the
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