You see a gold ring in a flea market that you’d like to have, and the price seems right, so you buy it. On the drive home you wonder if it’s really gold. You do a quick experiment and find it takes 38.7 J of heat to raise the temperature of the 6.00 g ring from 25oC to 75oC. You know that the specific heat of gold is 0.128 J/goC; is your ring really made of gold?

it is called acid bonding

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

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".