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.

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

What is the molar mass of ca(cio4)2