A 21-year-old woman has a primary complaint of menorrhagia….

A 21-year-old woman has a primary complaint of menorrhagia. Her coagulation screen gives the following results. What disorder is most likely? Test Result Reference range Prothrombin time (PT) 12.0 seconds 11-15 seconds Partial thromboplastin time (PTT) 40 seconds 25-37 seconds Factor VIII activity 35% 50%-150% Platelet count 225 x 109/L 150-400 x109/L

Which expression best reflects the way to calculate the enth…

Which expression best reflects the way to calculate the enthalpy of the reaction of MgO and HCl to form MgCl2 and H2O (ΔHrxn,MgO+HCl) in kJ/mol from the released heat of reaction, given the following data? Mass of MgO 0.511 g Specific Heat of HCl soln (water) 4.184 J/g-deg Change in temperature, ΔT 4.4 deg Volume of HCl added 101.2 mL Concentration of HCl added 0.997 M MW, MgO 40.304 g/mol Density of HCl solution 1.016 g/mL ΔH1 (experimentally determined) -466.8 kJ/mol ΔHf,water -285.8 kJ/mol