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Presuming that the dissociation constant of acetic acid is 1.8 x 10-5
What would be the pH of a buffer solution that is 0.5 M in acetic acid and 0.5 M in the acetate anion?
Question- The Nuclear mass of Fe-56 is 55.9207 amu. Calculate the binding energy per nucleon for Fe-56. (units J/nucleon)
While NEM is added to a purified solution of creatine kinase, Cys 278 is alkylated, however no other Cys residues in the protein are modified. Explain what can infer about the Cys 278 residue based on this observation
consider the following tetra-substituted cyclohexane. Draw both chair conformations of this compound. Determine which conformation is more stable
What are these Lewis Structures?
1. what characteristic properties distinguish the transition elements from the group ia and-iia metals?2. name these
An inflated balloon is put in a refrigerator, and it shrinks. How does the first law of thermodynamics apply to this case? What can be said about the total entropy of the universe? Why is it true?
When Na2SO3 is dissolved in water, resulting solution is basic. Write a chemical equation to explain qualitatively why the solution has that pH.
Based on the sign of E°cell, classify these reactions as spontaneous or nonspontaneous as written. Assume standard conditions. Zn^2+ (aq) + Sn(s) --> Zn(s) + Sn^2+(aq) Al^3+ (aq) + 3Na(s) --> Al(s) + 3Na^+ (aq) Ni^2+ (aq) + S^2- (aq) --> Ni(s) + S..
According to the VSEPR model, what are the arrangement of two, three, four, five, and six valence-shell electron pairs about an atom
2HI(g) ? H2(g) + I2(g) Keq = 0.016. Initially a container contains 0.46 M HI and no product. What is the equilibrium concentration of H2
Solve an equilibrium problem (using an ICE table) to calculate the of each of the pH following solutions.
odium carbonate (Na2CO3) can be produced by heating sodium bicarbonate (NaHCO3). A student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate.
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