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What does the absorption spectrum of the ligand, ethylenediamine, look like in the visible region which you used in this experiment. Assign the absorption maxima you used in this experiment to individual species in the system, where this is possible.
What is the percentage yield when 28.16 g of carbon dioxide is formed from the reaction of 4.00 moles of
Protein Quantification :why did you choose one standard curve over the other for analysis of your unknown?
HCl by mass and has a density of 1.20g/ml .How much concentrated solution would you take to prepare 2.75L of 0.430 M HCl by mixing with water?
given the reaction ca 2h2o caoh2 h2what is the total number of moles of ca needed to react completely with 4.0 moles
At 500 K, PCl5 decomposes rather extensively into PCl3 and Cl2. If 1.000 moles of PCl5 is placed in a 1 liter box at 500 K, 13.9 % of it decomposes into PCl3 and Cl2. Calculate K for PCl5(g) PCl3 + Cl2
How many moles of NaF must be added to 100.00mL of 0.15 M HF to prepare a buffer with pH=3.30. Ka(HF)=7.1*10^-4
Calculate the percent yield for a student who completed experiment 27A and collected the following data. Give your answer to two decimal places.
Tyrosine was loaded onto an anion-exchange column and completely washed with a pH 6.5 buffer. Which amino acid came off the column first? A) Arg B) Lys C) Tyr D) His E) None, all would be retained on the column at pH 6.5
Provide a structure for the following compound: UV spectrum: ?max = 272 nm (? = 39,500); EI mass spectrum: m/z = 129 (molecular ion and base peak); IR: 2200, 970 cm-1; 1H NMR: ? 5.85 (1H, d, J = 17 Hz); ? 7.35 (1H, d, J = 17 Hz); ? 7.4 (5H, appare..
The temperature of the entire system rose from 25.30 °C to 26.59 °C. Calculate the heat of reaction, in kJ, per mole of KOH(aq).
Addition of a catalyst lowers the activation energy by 15.0 kJ/mol. By what factor (k catalyzed/ k uncatalyzed) does the rate increase at 25 °C?
What temperature would you expect seawater to freeze? You may assume that the density of sea water is 1kg/liter and Kf=1.86 for water
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