What is the relationship between potential and kinetic energy in chemical reactions?
Select all that apply.
~Kinetic energy transforms into potential energy when changes in the bonds of reacting substances affect the motion of the atoms within them.
~Potential energy transforms into kinetic energy when moving molecules bump into each other and cause the position of their bonds and atoms to change.
~Potential energy transforms into kinetic energy when changes in the bonds of reacting substances affect the motion of the atoms within them.
~Kinetic energy transforms into potential energy when moving molecules bump into each other and cause the position of their bonds and atoms to change.

Consider the particle-in-a-box problem in 1d. a particle with mass m is confined to move freely between two hard walls situated at x = 0 and x = l. the potential energy function is given as (a) describe the boundary conditions that must be satisfied by the wavefunctions ψ(x) (such as energy eigenfunctions). (b) solve the schr¨odinger’s equation and by using the boundary conditions of part (a) find all energy eigenfunctions, ψn(x), and the corresponding energies, en. (c) what are the allowed values of the quantum number n above? how did you decide on that? (d) what is the de broglie wavelength for the ground state? (e) sketch a plot of the lowest 3 levels’ wavefunctions (ψn(x) vs x). don’t forget to mark the positions of the walls on the graphs. (f) in a transition between the energy levels above, which transition produces the longest wavelength λ for the emitted photon? what is the corresponding wavele

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.