If the activation energy for a given compound is found to be 103 kj/mol, with a frequency factor of 4.0 × 1013 s-1, what is the rate constant for this reaction at 398 k? 2.5 × 107 s-18.2 s-13.9 × 1010 s-11.2 s-11.7 × 1010 s-1

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?

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?

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.