Chemistry Homework Solutions

What is the structure of the compound?

A compound with the formula C11H20 is found to decolorize bromine in carbon tetrachloride... See attached file for full problem description.

Proteins

I need the formula of 6 isomeric tripeptides of tryptophan, glycine and methionine using 3-letter abbreviations for each amino acid.

Proteins

A globular protein in aqueous surroundings contains the following amino acid residues; phenylamine, methionine, glutamate, lysine, and alanine. Which amono acid would have their side chains directed toward the inside of the proteins and which would have their side chaind directed toward the aqueous surroundings? I also need t ...continues

Proteins

How to draw the structure of this tetrapeptide: Ala-Ser-Tyr-Thr What type of bonding between amino acid residues is most important in holding a protein and polypeptide in a specific secondary configuration?

Organic Chemistry

1. Which of the following intermediates is believed to occur in the mechanism by which alkenes are hydrated in the presence of acid? a. carbocation b. free radical c. carbanion d. carbene 2. HBr can be added to an alkene in the presence of peroxides (ROOR). What function does the peroxide serve in this react ...continues

Organic Chemistry

1.5 The alkene structure that upon ozonolysis-reduction yields CH3COCH3 + CH3CH2CHO is a. CH3CH2CH2CH2CH=CH2 b. (CH3)2 C = C(CH3)2 c. (CH3)2CH2CH=CHCH3 d. (CH3)2C=CHCH2CH3 1.6 The best reagent to use to obtain 2-methyl-1-cyclohexanol from 1-methyl-1-cyclohexene is a. H20 plus dilute acid b. O3 follo ...continues

Degree of unsaturation and other questions

(See attached file for full problem description)

Detailed synthesis of aromatic organic compounds

I have to perform two synthesises of the compounds shown in the attatchment. I have to use the following starting materials as sources of carbon: benzene, acetylene, diidomethane, carbon dioxide, sodium cyanide, and any monofunctional alcohol with three carbons or less. What are some good suggestions as to the methods/routes I s ...continues

What volume of Cl2(g) at STP would you need to obtain a 250g sample of Cl2

1. What volume of Cl2(g) at STP would you need to obtain a 250g sample of Cl2(g)? 2. A .418g sample of gas has a volume of 115mL at 66.3 degrees Celsius and 743mmHg. What is the molar mass of this gas? 3. What is the volume, in liters, occupied by a mixture of 15.2g Ne(g) and 34.8g Ar(g) at 7.15 atm pressure and 26.7 degre ...continues

What is the structure of the hydrocarbon?

A hydrocarbon was found to have a molecular weight of 80-85. A 10.02 mg sample took up 8.40 mL of H2 gas at 0 degrees C and 760 mm pressure. Ozonolysis yielded only two compounds shown in the attached .jpg. What is the structure of the hydrocarbon? See attached file for full problem description.

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