A water sample contains 0.1 M of Pb2+ and 0.1 M of Th4+ ions; when a solution of IO3– is slowly added to this sample, which of the ions will precipitate first and why? Ksp Pb(IO3)2 = 2.5 × 10–13 and Ksp Th(IO3)4 = 2.4 × 10–15.

The crust of earth may a- continets and ocean floors. b-continents only. c-layers of sedimentary rocks and continents. d-all of the above

Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption