The answers to number 7,8,9,10,11,12

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.

The three types is stress that act on earths rocks are compression, tension, and

Find the number of moles of argon in 364g of argon.