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Which SUBSTANCE in the following would NOT NEED to be included in an enthalpies of formation table?
A) Br2 (g)
B) Br2 (s)
C) Br2 (l)
D) Br (g)
draw a detailed mechanism including arrows to show electron flow for the synthesis of acetylferrocene from ferrocene
What are the differences between sub-energy levels and orbitals? (My professor said they were different.)
At 2000 degrees Celsius the equilibrium constant for the reaction 2NO (g) N2 (g) + O2 (g) is Kc=2.4x10^3 The initial concentration of NO is 0.174 M
Calculate the number of grams of NaOH per 100ml to give a pH8.0 solution if pure water at pH7.0 is used in the experiment. Repeat this calculation for a pH6.0 solution using HCl.
The tripeptide alanyllysylaspartate contains four ionizable groups with pKas of 2.0, 3.9, 9.9, and 10.5. Calculate the pI for this molecule.
Benzoic acid was made in a reaction along with product and benzoic acid needs to be removed using extraction. How can this be done. The solvent is CH2Cl2
Polly Esther determined the Ca2+ ion content of a 100 mL sample of calcium fortified orange juice. After adding 2.0 M HCl solution to the sample, she filtered the juice to remove the pulp and other particulate matter
Ethanol fills a cylindrical glass tube 15.0inches long. We find that the mass of ethanol needed to fill the tube is 9.4g. Calculate the internal pipe diameter in inches. (The density of ethanol is 0.789 g / ml)
Give the structure of a hydrocarbon that has six carbon atoms and three vinylic hydrogens and two allylic hydrogens
what was your sampling rate to the nearest 1 ml/min over a four hour sample period if you collected 35 mg of carbon tetrachloride from a known concentration of 150 PPM?
a 1.0 ounce piece of chocolate contains 15 of caffeine and a 6.0 ounce cup of regular coffee contains 105 of caffeine.
In the Lewis structure of PCl3, how many bonds and how many lone pairs are on the central atom?
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