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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.

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?

The gram molecular mass or co2 is the same as the gram molecular mass of