Some headache medicines are fine powders that are dissolved in water and then ingested. these medicines claim they work faster than other medicines. could this be true? why or why not?

a. false: chemicals react at the same rate in the body, as determined by body temperature.

b. false: these would actually slow the reaction because it would become less concentrated

c. true: a solid will react quicker in the liquid environment of the stomach than a gas or liquid

d. true: a fine powder dissolves quickly, this solution can more quickly be absorbed and begin working

For a patient with the following pes statement and interventions, which would be the most appropriate monitoring and evaluating data? pes statement: inadequate calcium intake related to food and nutrition related knowledge deficit as evidenced by statements that the only dietary source of calcium is milk and she believes that she is lactose intolerant. patient’s nutrition prescription is for a diet providing 1200 mg calcium per day. patient was provided with in-depth nutrition education on alternative dietary and supplement sources of calcium. a. calcium intake (at subsequent visit) b. knowledge assessment by asking patient to identify food sources from menus and shopping list (at the end of the current visit) c. serum calcium (at next visit) d. both a and b e. both a and c

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.