In calculating density for an unknown sample, we must divide its mass, 294.37 g, by its volume, 87 ml. What is the correct density of the mineral calculated using rules you learned for multiplying
and dividing with significant figures?

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".