How many grams of aluminum nitrate is needed to form 0.807 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.

How do you identify the anode on a power source such as a battery? how do you identify the cathode? how are terms anion and cation?

What volume would 2.25 moles of ne has occupy at stp?