A chemist is doing an experiment to see how different oxidation states affect the mass of a carbon-based compound. Which of the following instruments would best help the chemist determine the results of her study? A. a burette B. a balance C. a barometer D. an anemometer

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".