Which substance is a mixture?
table salt
gasoline
aluminum
carbon dioxide

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.)

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

How can one make a supersaturated solution? (apex)