P18a.1 in the dimerization of methyl radicals at 25°c, the experimentally determined frequency factor is 2.4 x 10'dm'mol's! . what are (a) the reac- tive cross-section, and (b) the steric factor for the reaction given that the c-h bond length is 154 pm?

Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

Answerrestate the main idea,essay or thesis, summarize the three subpoints of your essay, leave the reader with an interesting final impression;

1. why does the same side of the moon always face earthc.the rotational period of the moon is equal to one revolution around earth2. which is greater the moons period of rotation or its period of revolution  b.the moons revolution period around earth3.what was the major accomplishment of the apollo missions  d.landing on and exploring the moon4. which of these space missions involved the deployment of lunar rovers d.apollo5. which scientists are going to explore next on kepler-186fd. evidence of existence of life6.which mission is not going to explore the outside of the solar systemb.safir7.which technology limit the future of space exploration b. scientist must first develop certain technologies before missions can be completed.