Given the mass spectrum of cocaine, identify the mass-to-charge ratio of the molecular ion.

25. Sodium chloride (NaCl) can be isolated by taking sea salt water and allowing evaporation of the water molecules.  These salt particles bond together once the water has evaporated through the attraction of positive and negative charges of ions. Which of the following choices  indicates the type of bond described between NaCl.  

25. Sodium chloride (NaCl) can be isolated by taking sea salt water and allowing evaporation of the water molecules.  These salt particles bond together once the water has evaporated through the attraction of positive and negative charges of ions. Which of the following choices  indicates the type of bond described between NaCl.  

25. Sodium chloride (NaCl) can be isolated by taking sea salt water and allowing evaporation of the water molecules.  These salt particles bond together once the water has evaporated through the attraction of positive and negative charges of ions. Which of the following choices  indicates the type of bond described between NaCl.  

A 30-year-old man complains of severe pain to his right tibia after an injury that occurred the day before. The patient’s leg is pale, and he is unable to move his foot. The EMT should suspect that:

9. Which of these is an example of inductive scientific reasoning? (Remember Specific –> General!)

57. If a short strand of DNA read 5′ AATTGCCGT 3′ ,  a complementary “DNA ” strand that was transcribed from it would read? 

16. Consider the 6 atoms presented below, which of the these atoms would react most similar in respects to chemical bonding to Phosphorus (P) with an atomic number of 15 (Hint- consider the valence similarities!)?

17. Taking into account the valences of Carbon(C) and Oxygen(O), how many Hydrogen(H) atoms must be added to complete the molecule below? (Hint- consider valence of each atom!)                                                                 O = C – C – C – C = C – C – C  

An unknown compound with molecular formula C5H12O has the IR spectrum below. Which of these five molecules is it most likely to be?