19. What is the strongest BrΦnsted-Lowry acid in the chemical reaction shown below? (A)HNO3(B)Ba(OH)
21. Which of the following statements is correct?(A) (B) (C) One mol H2 (at STP) has more positional
9. Consider two separate solutions of equal concentration. The first solution contains sodiumhydroxi
23.Shown is a concentration versus time plot for a reaction involving gases A, B, and C. Which equat
20. If the ionization constant of water, Kw, at 40℃ is , then what is the hydroniumion concentration
24.Consider a reaction that occurs by the following one-step mechanism: A2+ B2→ 2 ABThe potential en
22. Consider the following reaction at 25°C: 2NO2(g)⇌N2O4(g). The values of ∆Ηο and ∆Sο are -58.03 k
20. The second-order reaction, has a rate constant equal to 3.0 xIf the initial concen entration , h
11. Which statement is true of a process in which 1 mol of a gas is expanded from state A to state B
12. Which of the following statements is correct?(A) the intemal energy of a system increases when m
15. From the following list of observations, choose the one that most clearly supports the conclusio
16. Which of the following is a reasonable criticism of the Bohr mode] of the atom?(A) it makes no a
19. The valence electron configuration of an element is . To which group does Xbelong?(A) Group 3A (
24. The atomic mass of 1H is 1.00782 amu and the mass of a neutron is 1.00866 amu. The binding energ