2 kJ of energy is applied to a sample of water causing the
temperature to be raised from
3°C to 212°C. What is the mass
of this sample if the specific
heat of water is 4.18 J/gºC?

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".