A. Assume amount of uranium ore reserves is 75 million tons and has the grade percent of 0.179% uranium oxide (U3O8). How many pounds of U3O8 are in ore?
B. Evaluate mass fraction of uranium in U3O8. Suppose average mass number of uranium is 238 and te average mass number of oxygen is 16.
C. Suppose there is 1 atom of uranium-235 for each 139 atoms of uranium found. Evaluate mass of U-235 in 75 million tons of ore stated in A.