Organic Chemistry Answers

Write formation reaction tripeptide ala-cis-gli. What properties will have a protein consisting of these amino acids? What is the IEP protein?

A solution is prepared by dissolving 19.2 g of glucose in 205 g of water. The final
volume of the solution is 214 ml. Find the concentration of the solution in units of
molality.

A solution of hydrogen peroxide is 13.7% by mass. What is the molarity of the
solution? Assume that the solution has a density of 1.01 g/mL.

5. How many milliliters of a 2.0 M CuSO4 solution are needed to prepare 0.250 L of
0.400 M CuSO_4?
6. What is the molarity of a solution in which 111 g sodium hydrogen carbonate is
dissolved in a 20.0 L solution?
7. A solution of hydrogen peroxide is 13.7% by mass. What is the molarity of the
solution? Assume that the solution has a density of 1.01 g/mL.
8. A solution is prepared by dissolving 19.2 g of glucose in 205 g of water. The final
volume of the solution is 214 ml. Find the concentration of the solution in units of
molality.

1. How many ml of water are needed to dilute 35ml 4M KCl to 3M?
2. What is the molarity of a solution containing 450 ml of solution containing 45 g of
MgCO3?
3. What is the molality of a solution made by adding 6.5g of NaCl to 600g of water?
4. What are the concentrations of aluminum and sulfate in a 5.0 M solution of
aluminum sulfate?

(b) 5-Amino-2, 4-dihydroxybenzoic acid A is a potential intermediate in the preparation of natural products of medicinal value. Propose syntheses, starting from methylbenzene (toluene).

(c) The reaction of allylic bromide (I) with magnesium metal generates the Grignard reagent (II) as shown below. Reagent II can be viewed as an ionic compound, consisting of components III and MgBr+.
Explain why structure I is not aromatic and draw molecular orbital diagram for species III and show how these molecular orbitals are occupied in the ground state of the species. Is the configuration a closed shell configuration? Explain.