Acertain reaction has an activation energy of 69.0 kj/mol and a frequency factor of a1 = 3.40ã—1012 m−1s−1 . what is the rate constant, k, of this reaction at 22.0 ∘c ? express your answer with the appropriate units. indicate the multiplication of units explicitly either with a multiplication dot (asterisk) or a dash.

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

At element makes up all organic compounds?

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices