Energy traveling as electromagnetic waves Radiant

Thermal

Chemical

Mechanical

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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.)

When balancing a chemical equation: