Identify the reagent that best completes the following reaction. 
Definitions:
Wason's Four-card Task
A logical puzzle presented as a psychological experiment to study conditional reasoning and bias in decision making.
Modus Tollens
Modus tollens is a form of deductive reasoning that takes the structure: If P, then Q. Not Q. Therefore, not P.
Basketball
A team sport where players aim to score points by shooting a ball through a hoop at a certain height.
Inductive Strength
A property of some logical arguments such that it is improbable (but not impossible) for the premises to be true and the conclusion to be false.
Q6: Rank the following nucleophiles in order of
Q9: Which of the following would be likely
Q21: Draw two possible sets of precursors that
Q23: Draw a Lewis structure for CH<sub>2</sub>N<sub>2</sub>.
Q32: What functional group is present in the
Q33: The two following molecules can react via
Q34: Which of the following would yield the
Q38: What is the IUPAC name for the
Q40: Which fundamental step does not occur in
Q51: What is the IUPAC name for the