A liquid-phase,1st-order reaction is carried out in an isothermal batch reactor (500 L of liquid to start). In previous studies, 90% conversion was reached in 4 hours. In the current study, after 1 hour, a valve was opened long enough for 500 L of water to flow into the reactor to dilute the reactant. How many hours (total) are required for 90% conversion for the current study

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?