What mass of HCl would be needed to produce 9.8 moles of water?

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.

Will mark brainliest how many electrons can be held in the energy level n = 4?

If two identical atoms are bonded, what kind of molecule is formed