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If you synthesized the tripeptide Leu-Phe-Ser from amino acids prepared by the Strecker synthesis, how many stereoisomers would you expect to be formed?
Marble is composed mainle of calcium carbonate. If 0.750 g of marble react with hydrocloric acid to produce 165 mL of carbon dioxide gas at STP, what is percent of calcium carbonate in the marble sample
Why is there a difference between the conduction of glacial acetic acid (CH3COOH) and 0.1 M Acetic acid (CH3COOH)? Please explain in detail.
The 11B nucleus has a spin I of 3/2 and a nuclear g factor of 1.7920. At what field would resonance be observed at 60 MHz?
A rock is found to contain 83.7% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of u-238 .) How old is the rock?
A 25.0-mL aliquot of vinegar was diluted to 250 mL on a volumetric flask. Titration of 50.0-mL aliquots of the diluted solution required an average of 34.88 mL of 0.09600 M NaOH. Express the acidity of the vinegar in terms of the percentage (w/v) ..
Assume your solution contains lead and iron but not silver or nickel. Explain how will you know that: - Either silver or lead is present ( that is, describe what you will see that will tell you at least one of these is there)
An engineer is designing a chlorine contact chamber to disinfect poultry-processing wastes. (Note these wastes are often contaminated with the pathogenic bacteria Salmonella). She can design the system to use chlorine gas (equivalent to using HOCl..
Consider the following reaction involving bromophemol blue (BPB) and OH- : HBPB(aq) + OH-(aq) = BPB-(aq) + H2O(l). The concentration of BPB can be monitored by following the absorption of this species and using Beer-Lambert law. In this law, the ab..
calculate the energy needed to raise the temperature of 180.0g of water from 10.0 C to 40.0 C. The molar heat capacity for water is 75.3 J/k*mol
calculate the mass of Fe(NO3)3 that you would need to yield a similar conductivity value as the NaCl
Research the number of electrons that can fit into energy levels higher than the third level. Why does that explain why there is a space in the lower periods of the periodic table?
How many grams of magnesium metal will react completely with 6.3 liters of 4.5 M HCl? Show all of the work needed to solve this problem.
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