Chemistry problem

Following is a partial protein with 6 amino acids missing. Supply six DIFFERENT amino acids. Choose them such that the amino acids across from each other show tertiary structure interaction. Label the type of interaction (H-bonding, hydrophobic, ion-ion, etc). Please see attachment Problem #6

Isotopes & Radioactive Decay. Includes using relationships between half-life (t1/2), decay constant, understanding decay.

The isotope C14 has a half-life of 5700 years. What fraction of the C14 atoms will decay (a) each year, and (b) each minute?

Isotopes and Radioactive Decay. Calculate the total radioactivity that results from one isotope in the human body. Must understand the concepts of half-life, decay constant, DPM, decay.

K40 (half-life=1.3x10E9 years) composes approximately 0.012% of the potassium found in nature. By weight, the human body is approximately 0.35% potassium. Calculate the total radioactivity that results from K40 decay in a 75 kg human.

Chemistry concept

7. Explain how nonpolar solvents can denature proteins.

Understanding molecular behaviour.

Are the following statements true or false? If false, explain why. a) In most globular proteins, the nonpolar amino acids tend to be concentrated at the surface of the protein. b) A small organic molecule required by an enzyme in order for the enzyme to be a functional catalyst is known as a vitamin. c) Lipids that are ...continues

Understanding molecular behaviour.

Are the following questions true or false? If false explain why. a) A carboxylic acid favours the ion form (R-COO-) and its pH is higher than its pKa. b)In most membranes, the polar heads of the phospholipids align towards the middle of the membrane. c)All proteins contain either an alpha helix or beta sheets.

Calculate the weight percentage of chloromycetin in the sample

Chloromycetin is an antibiotic with the formula C11H12O5N2CL2. A 1.03-g sample of an phthalmic ointement contining choloromycetin was chemically treated so as to convert its chlorine into Cl~ ions. The Cl~ was then precipitated as AgCl. If the AgCl weighed .0129g, calculate the weight percentage of chloromycetin in the sample ...continues

Step-wise procedure for balancing redox reactions

Balance the following redox reaction: MnO4-(aq) + C2O42-(aq) -> Mn2+(aq) + CO2(g)

Calculating the amount of material reduced through electrolysis

Calculate the amount of gold deposited (in grams) from a solution of Au3+ if the electrolysis lasted 30 minutes at a current of 5.00A.

Synthesis and Analysis of a Transition Metal Complex

I need help with my lab. Here are the questions. What is the Calculation of % yeild of hexaamminenickel (II) Chloride? use 7 grams of NiCl26H2O and its mass is 237.71. I got 6.83g but what is its % yeild? It asked to estimate the amount of hexaaminenickel chloride that is neutralized by 25 ml of 0.10 M HCL and I got 97mg. ...continues