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Answer one of the following
a) Safranin is a red stain used in biology and has this structure. Use the structure of the molecule to explain why safranin is coloured.
b) Discuss the three factors that contribute to the frequency of IR absorption peaks.
Explain if this energy were used to vaporize water at 100, Define how many grams of water could be vaporized. The heat of vaporization of water at 100 is 40.7. Presume that the density of water is 1.0 g/mL
What makes weak/strong bases. a problem the diagrams- that has a 4 carbon chain with some substituents....they all have a double bonded oxygen on the 1st carbon
if the specific heat of water is 4.18 jg x celsius for a mass of 125 g of water which increased in temperature by .121
The question is: Nguyen et al. 2014: butelase 1 may have utility in biotechnology as it can enzymatically catalyze formation of cyclic peptides.True or False?
Boron has two naturally occurring isotopes, 10B (19.9%)and 11B (80.1%). Although the B2 moleculedoes not exist naturally on Earth, it has been produced in the laboratory and observed in stars. (a) How many differentB2 molecules are possible? (b) W..
Starting with 2-methyl-3-hexanone, show the complete mechanism for the acid-catalyzed formation of the imine using propylamine (Pr-NH2.)
Identify the Lewis acids in the following two equilbrium systems: System A: CO2 + H2O ? H2CO3 System B: Zn2+ + 6H2O ? Zn(H2O)62+ A. A: H2O; B: H2O B. A: CO2
oxalic acidc2h2o4 is generally used as ableaching and cleansing agent. calculate concentration of all the species
The probability that the annual peak will equal or exceed the median value in any single year. The average return period of the median value.
suppose that coal of density 1.5 gcm3 is pure carbon. it is in fact much more com- plicated but this is a reasonable
NaCl is dissolved in two beakers. One beaker contains pentane C5H12 as well as one beaker contains pentanol, C5H11OH.
A buffer is to be made with a pH of 8.50 by adding hydrobromic acid to one of the following bases. Which base is the best choice for making this buffer
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