Fill in the blanks with the correct forms of the indicated verbs and the appropriate pronouns.  1. A mí (encantar) las películas de misterio.  2. A Gregorio (molestar) mucho la nieve y el frío.  3. A ustedes (faltar) un libro de esa colección.  4. ¿ (quedar) bien los sombreros a ti?  5. A ella no (importar) las apariencias (appearances).  6. A mí los deportes por televisión (aburrir) mucho.

H-NMR ID of Unk – Level 3 Which of the following molecules best fits the NMR spectra above?

Level 1 – Mass Spec Analysis A student injects a 100% pure simple alkane sample onto a mass spectrum and obtains the following spectrum.  Identify the simple alkane from the provided choices below.  

Level 1 – C-NMR Signal Prediction How many signals would Acetone show on a decoupled 13C-NMR spectrum?

Level 3 – IR Spectrum Reading (1 of 2) A: B: C:D:  Which of the spectra above would would least likely correspond to carbonyl containing compound? 

Level 2 – Recrystallization – Solute Properties Based on Solubility Given the following information concerning Compound Y: Compound Y did not dissolve at all in benzene at any temperatures. Compound Y dissolved completely in hot, but not cold propanol. Compound Y dissolved completely in an water at all temperatures. What can be inferred about the compound Y’s polarity?

Level 2 – TLC – Standard Phase Conditions When examining cyclohexanone, which of the following IMFs described below would be likely responsible for keeping the Rf low during a standard-phase TLC experiment?

Level 1 – UV Characterization Which of the following functional groups is the least UV active?Note: This is not asking about fluorescence.

Level 3 – Chromatography – Columns vs TLC TLC plates are essentially miniature column chromatography experiments. The order in which the analytes travel is proportional to the order in which the analytes would elute off of a column. Four compounds consisting of propanol, cyclohexene, 3-amino-hexanoic acid, and acetic acid, were combined and added onto a silica gel column with a mobile phase of hexane:ethyl acetate (10:1 v/v). Predict the compounds elution order from first to elute (1) to last to elute (4) based on IMFs.

Level 1 – Melting Point – Relative Comparisons The following statements are comparative to one another. Fill in the blank to create two true statements. Melting point ranges for pure substances are ____________; in contrast, melting point range for impure substances are ____________ .