A block of zinc has a density of 7133 gcm3 and atomic, Ask an Expert

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A block of zinc has a density of 7.133 g/cm^3 and atomic weight of 65.39 g. A) Calculate the atom density of the zinc. B) Find the macroscopic thermal neutron absorption cross section for zinc, assuming that microscopic cross section for absorption of zinc is 1.10 barns.

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