J. J. Thomson's experiments with cathode rays ended up . A. testing the theory of atoms B. proving that atoms don't exist C. comparing two existing theories of atoms D. confirming the results of other scientists about atoms

Which changes of state do the labels represent? a: b: c:

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.

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?