There are two spheres of the same size, one is metal and one is wood. Why
does the metal sphere have more mass?

metal is heavier than wood.

Explanation:

metal is made of rock which doesn't have air in it while wood has air in it making it lighter

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".