2. In the molecule shown, what are the expected geometries around the indicated carbon atom and nitrogen, respectively? (A) tetrahedral and trigonal pyramidal (B) trigonal planar and angular (C) angular and linear (D) tetrahedral and angular N-HI 3. In the chemical species shown, what are the formal charges for the nitrogen atom and the oxygen atoms labeled a and b, respectively? Note: all lone pair electrons are shown. a O=N-O: (A) +1, +1, -1 4. How many o and N 4 N (A) 8 and 2 (B) 0, 0, -1 (C) 0, +1, -1 bonds, respectively, exist in the molecule shown? (B) 6 and 3 alor? (D) +2,0, -1 (C) 7 and 4 (D) 10 and 4

6 a)     A proportion of fentanyl is known to be lost to IV infusion bags made from PVC on storage and this effect is known to be pH dependent. Explain why you believe this effect occurs and what potentially could be done to minimise loss of fentanyl to the PVC packaging

731375SSO Which of the following substances meets the definition of a pure "compound" according to the chemistry textbook? Place a check next to all choices that apply. O Distilled water: H20 O Pure copper metal: Cu O Dinitrogen Trioxide vapor: N203 OAmmonium Chloride: NH4CI O Himalayan Sea Salt: Mixture of NaCI, Fe203, and other trace minerals. O Compound W: (Read ingredients) Drug Facts Compound W FAST ACTING GEL PETt STAS

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