How to determines whether a solute will be soluble in a solvent?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

When the mercury level in a barometer decreases that atmospheric pressure has

Which of these is an intensive property of a substance