6. When using a spectrometer to measure rate you initially measure absorbance vs. time. Explain how this raw data can be converted to velocity and then plotted to determine KM and Vmax

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.