How many different tetrapeptides containing 2 molecules of alanine and 2 molecules of valine could theoretically exist? What are they? Write in shorthand.
tBoc Problem - I'm completely stuck with this problem. I know the tBoc group can be used as a protecting group, but I don't know how to use that to seperate enantiomers.
Problem:
Describe in 5 sentences or les ...
Molecules - How many molecules are present in 475 mL of CO2 at STP?
a. 2.86 x 10 to the power of 23 molecules of CO2
b. 0.0212 molecules of CO2
c. 6.50 x 10 to the power of 21 molecules of CO2
d. 1.28 x 10 ...
Verley-Doebner modification of Knoevenagel - In this modification of Knoevenagel condensation, malonic acid (not the ester) is reacted with an aldehyde to yield an alpha beta conjugated carboxylic acid. Pyridine is used as a solvent and catalyst ...
Rate of destruction of methane - At an altitude of 35 kilometers, the average concentrations of O* and of CH4 are approximately 100 and 1E11 molecules cm-3 respectively, and the rate constant k for the above reaction is approximately ...