True or false? a closed system interacts with the environment constanly?

List four observations that indicate that a chemical reaction may be taking place

Mercury turns to vapor at 629.88 k how much heat is lost 175 g of mercury vapor at 650 current condenses to a liquid at 297 ca mercury turns to weber at 629.88 kelvin how much he is lost 175 g of mercury vapor and 650 coming condensers to liquidate 297 kevin

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