Select all of the statements that are true. Electrons are traveling so fast that it is impossible to know their exact locations. Electrons orbit slowly around the atom. Electrons are located in shells or orbits around the atom. Electrons travel in one flat path around the nucleus of an atom.

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Can someone me with 1 to 4 plz. fast

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3