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Problem- Compute the total number of possible decapeptides that could be synthesized from the 20 standard amino acids. If you were to spend five minutes writing out the molecular structure of each possible decapeptide how long would the task take?
Show all work, use additional paper if necessary.
A solution is made that is 1.5*10^-3 M in Zn(NO3)2 and 0.130 M in NH3. After the solution reaches equilibrium, what concentration of Zn^2+(aq) remains
Neutron stars are believed to be composed of solid nuclear matter, primarily neutrons.If the radius of a neutron is 1.0 × 10-13 cm, calculate the density of a neutron in g/cm3. (volume of a sphere = ) Assuming that a neutron star has the same dens..
In a particular experiment, 2.25 g of NH3 and 3.75 g of O2 are placed in a container and allowed to react. How many grams of NO will have been formed when all of the limiting reactant has been consumed?
Combustion of 2.80 g of this compound produced 5.59 g of CO2 and 2.29 g of H2O. What is the empirical formula of the unknown compound?
Compute the molar solubility of Hg2Cl2 a solution that contains 0.0100M KN03 and is saturated with HG2Cl2(s)
A gas sample has a volume of 4.50 L when the temperature is 28 oC and the pressure is 1.00 atm. What will be the new volume of the gas when the temperature is changed to 0.0 oC and the pressure to 850 torr
A student is asked to determine the formula of a hydrate of colbalt (II) chloride. The mass of the empty clean, dry crucible and cover, after heating is 22.446 g. A sample of 0.324 g of cobalt chloride is added to the crucible.
Consider the titration of a 25.0 mL sample of 0.110M HC2H3O2 with 0.130M NaOH. Determine the pH at one-half of the equivalence point. initial pH=2.85, the volume of added base required to reach the equivalence point=21.2 mL
Explain what are the equilibrium concentrations of fructose 1, 6-bisphosphate, dihydroxyacetone phosphate and glyceraldehyde 3-phosphate when 1mM fructose 1, 6-bisphosphate
for a particular reaction deltahdeg is 20.1 kj and deltas is 45.9 jk. assuming these values change very little with
the structure Y---X---Y (2 lone pairs around X) could be abbreviated as XY2Z2. Classify these structures according to their shape.
Identify the compound: molecular mass 113; gives a positive hydroxamate test, which indicates the presence of either an acyl chloride or an ester
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