123 005w of heat is removed from water vapour (at 373k) condensing on the outer surfaces (at 363k) of an array of cylinders of length 0.6m and diameter 0.05m. how many cylinders are needed if the heat transfer coefficient is 3000w/m2k? hints: round off to the nearest integer and use newton's law of cooling.

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next