Please help someone asap

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

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !