Please help if you can I am in a hurry!! Which method of separating a mixture involves passing a heterogeneous mixture through several layers of different materials? filtration decantation evaporation distillation

One does not belong why? ice, gold ,wood ,diamond and table salt

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.