Lanthanum(iii) chloride dissolves in water according to: lacl3(s) → la3+(aq) + 3 cl-(aq). What is the boiling point of the solution when 0. 2453 g of lacl3 (molar mass 245. 3 g/mol) is dissolved in 10. 0 g of h2o? (kb of water is 0. 512 oc/m. ).

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i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!