Neutrons, like electrons and photons, are particle-waves whose diffraction patterns can be used to determine the structures of molecules Calculate the kinetic energy (in J) of a neutron with wavelength 81.4 pm.

Upon decomposition, one sample of magnesium fluoride produced 1.65 kg of magnesium and 2.56 kg of fluorine. a second sample produced 1.32 kg of magnesium. part a how much fluorine (in grams) did the second sample produce?