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Question 1: What is a specific type of crystal and how can it be identified and described? What is a real world application of it?
Question 2: What is a real world situation where the properties of a solution are different from those of its solvent and where is this is beneficial?
Question 3: What is a way in which you could alter the equilibrium composition of a reaction mixture. Why might one want to do so?
Question 4: What are phase changes?
A 200 MHz proton NMR instrument is used to obtain a ^13C spectrum. calculate the energy difference that will develop between teh two spin states of the ^13C nuclei.
Problem- The flask shown here contains 0.761 g of acid and a few drops of phenolphthalein indicator dissolved in water. The buret contains 0.160 M NaOH. 1) What volume of base is needed to reach the end point of the titration
We have a refrigeration unit that works at a pressure of 0.1MPa in the evaporator and 1 MPa in the condenser. The refrigeration unit uses a compressor with an efficiency of 90% and a turbine with 100% efficiency is used to expand the refrigerant a..
express your answer in condensed form in order of increasing orbital energy as a string without blank space between
The mysterious peptide X is a nonapeptide that cannot be sequenced by Edman degradation. However, it is susceptible to cleavage by proteases, and the resulting peptide fragments can be sequenced.
Nitrogen froms a trifluoride, NF3, but Nf5 does not exist. For phosphorous, both PF3 and PF5 are known. Write Lewis structures for NF3, PF3 and PF5 discuss possible explanations for the fact that PF5 is stable,
Suppose that in changing samples, a portion of the water in the calorimeter weere lost. In what way, if any, would this change the heat capacity of the calorimeter?
A 100 L reaction container is charged with 0.704 mol of NOBr, which decomposes at a certain temperature say between 100 and 150ºC according to the following reaction
How would I do this? A lactic acid/lactate ion buffer solution contains .22 M HC3H5O3 and .80 M C3H5O3- , respectively. The Ka value of lactic acid is 1.4 x 10^-4. calculate the pH of this buffer
Explain the atomisation method you would use in this instance and the advantages it has over alternative?
Enter scientific notation as 1.23E4. (a) When 11.50 mL of 0.470 M HNO3 have been added. (b) When 65.00 mL of 0.470 M HNO3 have been added
Problem- What is the degeneracy of a quantum state for a hydrogen atom for which n = 2 and l = 1? Please explain and show math
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