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Question - In this fourth unit of the class, we are at the midway point. You have been exposed to the first six chapters of the material for this course. Reflect on the concepts. What have you struggled with in these chapters, and what tools or ways have you used to overcome the obstacle to learn the material? Are you still struggling with a concept with which you need help? Share these answers and any other questions you have.
Describe reasons the paper's physical properties are different from the water's physical properties.
Draw and name the product for the following reaction between an alkyne, 3-methyl-1-butyne
If a buffer solution is prepared by dissolving 27.22 g of KH2PO4 and 3.37 g of KOH in enough water to make 0.100 L of solution. Explain what is the pH of the H2PO4-/HPO42- buffer if the Ka2 = 6.2 times 10-8
Why are unsaturated carbonyl compounds UV active but saturated esters and ketones are not UV active
What would the appropriate substrate concentration be? b) At what substrate concentration would you expect 30% of the enzyme molecules to have substrate bound?
During an experiment, a student mixed 14.5 mL of a .5 M sodium flouride solution with 15.6 mL of a .750 M hydrofluoric acid solution. The measured pH was 3.24. Calculate the pKa.
The pI can be estimated fairly accurately within 0.1 or 0.2 pH units from the pK values of all the proton dissociable groups in the peptide. Utilizing pK values from the table at the right approximate the pI value of the following hexapeptide. Trp..
A solution was analyzed using AA spec for Au. The signal was 150. This sample solution was placed in a 10 mL container and spiked with 2 mL of a 0.125 mM standard Au solution. The spiked solution returned a signal of 185.
To determine the molar mass of an unknown protein, 1.00 mg was dissolved in 1.00 mL of water. At 25.0°C the osmotic pressure of this solution was found to be 1.47 × 10-3 atm.
A mass spectrum of phosphorus (P) atoms shows only asingle peak at a mass of 31.What can you conclude from this observation?
Two vessels are labeled A and B. Vessel A contains NH3 gas at 73 degrees C and vessel B contains Ne gas at the same temperature. If the average kinetic energy of NH3 is 7.1 10-21 J/molecule at 70 degrees C.
When t-butyl chloride is reacted with H2O, a minor product is 2-methylpropene. Which mechanism best explains the formation of this minor product
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