Abnormal swelling of the pharyngeal tonsils (adenoids) is of…
Abnormal swelling of the pharyngeal tonsils (adenoids) is often associated with an increased incidence of middle ear infections in children. These ear infections are most likely due to the adenoids blocking which one of the following?
Read DetailsA patient with chronic frontal sinusitis that is unresponsiv…
A patient with chronic frontal sinusitis that is unresponsive to antibiotic therapy will undergo exploratory endoscopy of the frontal sinus. In order to gain access to the frontal sinus, the endoscope should be inserted into an opening in which one of the following spaces of the nasal cavity?
Read DetailsLexan is a plastic used to make compact discs, eyeglass lens…
Lexan is a plastic used to make compact discs, eyeglass lenses and bullet-proof glass. One of the components used to make Lexan is phosgene(COCl2), an extremely poisonous gas. Phosgene decomposes by the equilibrium reaction: COCl2(g) CO(g) + Cl2(g) The Kp of this reaction is 6.8 E-9 at 100C. If pure phosgene at a pressure of 2.5 atm decomposes, calculate the equilibrium pressures of each compound. Prove the 5% rule can be used.
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