4) (a) What, if anything, is wrong with the contention that density is unrelated to mass and volume? If something is wrong identify it and explain how to correct it. If nothing is wrong, explain why the contention is appropriate. (b) Is viscosity a particle or bulk property of a material? Explain. -J- (c) A certain compound has atoms of three elements, each element contributing one atom to the molecules of the compound. Can the density of the compound as a liquid be less than the density of any of the elements as liquids