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A 55-year-old man is admitted with high fever, non-productiv…

A 55-year-old man is admitted with high fever, non-productive cough, and hyponatremia. A sputum gram stain shows many neutrophils but no visible organisms.  Routine bacterial cultures are negative after 48 hours. The clinician suspects Legionella pneumophila infection. What is the most rapid and specific test for confirming the diagnosis?

A child presents with an infected finger after having been b…

A child presents with an infected finger after having been bitten by his pet cat.  The culture of the wound grew a pure culture of gram negative the organism shown below on gram stain.    Additional characteristics of this organism include: Indole – positive Catalase – positive Oxidase-positive Urease-negative No Growth on MAC The most likely identification is which organism?

(WCSP25) Ranexa is a pharmaceutical used to treat angina (ch…

(WCSP25) Ranexa is a pharmaceutical used to treat angina (chest pain due to lack of oxygen to the heart).  Using its structure is below, answer the following prompts:   a.  The pair(s) of orbitals that overlap to form the bond indicated by A is(are) [drop2], [drop3]. b. The hybridization about atom B is [drop4]. c. The molecular geometry of atom C is [drop1].

(WCSP25)  The cross sections of three different ionic compou…

(WCSP25)  The cross sections of three different ionic compounds (labeled Compound 1, 2 and 3) are displayed in the figures below. In the figures, the charge on each ion is indicated, and the diameter of each circle reflects the diameter of each ion.    Rank these compounds in order of increasing melting point. lowest [drop1] < [drop2] < [drop3] highest

13. (WCSP[x], 6 points) Draw three constitutional isomers of…

13. (WCSP[x], 6 points) Draw three constitutional isomers of the molecular formula of C5H10O.   Isomer A should include a aldehyde. Isomer B should include an alcohol. Isomer C there are no requirements!  Get creative! Give the number of sigma bonds in Isomer A in the box below.