The data from a study of the decomposition of NO2(g) to form NO(g) and O2(g) are given in the table above. Which of the following rate laws is consistent with the data? Solution: We need to recognize what order this reaction is. Key facts to remember!For the first order reactions, the graph of (ln of…
To catalyze a biochemical reaction, an enzyme typically(A) drives the reaction to completion by consuming byproducts of the reaction(B) binds temporarily to reactant molecules to lower the activation energy of the reaction(C) dissociates into additional reactant molecules, thereby increasing the reaction rate(D) decomposes and releases energy to increase the number of successful collisions between reactant…
A student obtains a mixture of the liquids hexane and octane, which are miscible in all proportions. Which of the following techniques would be best for separating the two components of the mixture, and why? (A) Filtration, because the different densities of the liquids would allow one to pass through the filter paper while the…
The first five ionization energies of an unknown element are listed in the table above. Which of the following statements correctly identifies the element and cites the evidence supporting the identification? (A) Na, because of the large difference between the first and the second ionization energies (B) Al, because of the large difference between the…
Of the three solutions listed in the table above, which one, if any, has the greatest electrical conductivity and why? (A) 0.1 M HC2H3O2(aq) because its molecules have the most atoms. (B) 0.1M KI(aq) because KI completely dissociates in water to produce ions. (C) 0.1 M CH3OH(aq) because its molecules can form hydrogen bonds. (D) All three solutions…