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In IR spectroscopy does the position of the stretch of the oxygen-hydrogen bond in alcohols depend on the concentration of the alcohol?
Compare lattice energies of LiI and PbI2 and calculate the formation enthalpy in each case by constructing a Born-Haber cycle. Which one is more ionic? Comment.
A flask contains 0.310 of liquid bromine, . Determine the number of bromine molecules present in the flask.
one heating 5.03 g of hydrate barium chloride, 4.23 g is left behind. what is the name of this hydrate?
Using a sample of 0.385 g of Alka-Seltzer, the mass of Carbon dioxide is found to be 0.122 gram. Compute and enter response (in numerical value only) to three significant figures.
A 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 ?C to 70 ?C .What is the speci?c heat capacity of this liquid.
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
methylamine (CH3NH2 Kb=3.6x10^-4) with 25.0 mL of 0.10 M benzoic acid (C6H5COOH Ka=6.3x10^-5), will the resulting solution be acidic, basic or neutral?
if you were to use IR spectroscopy how would you differentiate between acetone, water, and diethyl ether? (include values and relate them to functional groups)
A 2 mL solution containing 1.40 uCi/mL is injected into the blood stream of a patient. After dilution, a 1 mL sample is withdrawn and found to have an activity of 2.9 * 10-4uCi. Calculate the blood volume,
Note that in some cases, the "product" may be the result of a proton transfer reaction. Do not assume that an aqueous workup (H3O+) is performed unless it is specified
Asprin, whose structure can be found in the introduction, can be made from the reaction of a phenol and an anhydride. Give the phenol and anhydride that could be used to make aspirin?
Gallium consists of two isotopes of masses 68.95 amu and 70.95 amu with abundances of 60.16% and 39.84%.
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