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You are working in the emergency department when M.C., an 82 -year-old widow, arrives by ambulance. Because M.C. had not answered her phone since noon yesterday, her daughter went to her home to check on her. She found M.C. lying on the kitchen floor, incontinent af urine and stool, and stating she had pain in her right hip. Her daughter reports a medical history of hypertension, angina, and osteoporosis. M.C. takes propranolol (Inderal), denosumab (Prolia), and hydrochlorothiazide, and uses a nitroglycerin patch. M.C.'s daughter reports that her mother is normally very alert and lives independently. On examination, you see an elderly woman, approximately 100 pounds ( ), holding her right thigh. You note shortening of the right leg with external rotation and a large amount of swelling at the proximal thigh and right hip. M.C. is oriented to person only and is confused about place and time, but she is able to say that her "leg hurts so bad." M.C.'s vital signs (VS) are 90/65, 120, 24, 97.5 . She is profoundly dehydrated. Preliminary diagnosis is a fracture of the right hip. M.C.'s daughter states, "Mother is always so clear and alert. I have never seen her act so confused. What's wrong with her?" What are 3 possible causes for M.C.'s disorientation that should be considered and evaluated?
In a gaseous KCI molecule, the equilibrium internuclear distance is 2.67×10^-10 m. Using data from Appendix F and assuming that a Coulomb potential is a good approximation of the potential from K+ + CI- to 2.67×10^-10 m, estimate the dissociation energy of gaseous KC! into K and Cl atoms (in kJ mol^-1). (Note: Table shows that a Coulomb potential is only a good approximation to the potent ial between two charged atoms at long inter-atomic distances; the percent ionic character of KC! at equilibrium is only 82%.)
The adaptive advantage associated with the filamentous nature of fungal mycelia is primarily related to a. the ability to form haustoria and parasitize other organisms. b. avoiding sexual reproduction until the environment changes. c. the potential to inhabit almost all terrestrial habitats. d. the increased probability of contact between different mating types. e. an extensive surface area well suited for invasive growth and absorptive nutrition.