Obi is trying to determine if a powdery, solid substance is an element or a compound. After recording some observations, he strongly heats a sample of the solid over a burner flame. After fifteen minutes, he turns off the flame and allows the sample to cool. He records his final observations in the data table.

The nurse in a gynecology clinic is completing preoperative teaching for a patient scheduled for an abdominal hysterectomy next week. the patient states that she is currently taking 325 mg of aspirin daily for chronic joint pain, along with multivitamin. the patient has type 2 diabetes; she closely monitors her blood glucose levels. currently she is taking an oral hypoglycemic agent. the nurse advises her to ask the anesthesiologist whether she should take this medication the morning of surgery. q1. the nurse instructs the patient to stop taking the aspirin. what is the rationale for this action. q2. why is it important to assess the patient of use of herbal products prior to surgery. q3. the patient asks how surgery could affect her blood glucose; how should the nurse respond?