If you were to drill a hole into the wooden sphere, and fill it with lead, how much of the volume of wood would have to be replaced to make the whole sphere neutrally buoyant (i. e. have the same density as water)? Pb: Mass: 47.96
volume: 4.2
density: 11.3

Wooden Sphere:
mass: 79.17
vol:79.2
Density:1.00

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

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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".