List properties common to many organic compounds

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

Disney, viacom and aol time warner are examples of

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.