H3o+ is created by choosing oxygen and then in the inorganic model kit. do not delete the yellow open valences (sticks), they will become the hydrogen atoms. to insert the second ion, choose that ion from the builder menu and then double click next to the first ion (or hold the insert key on your keyboard and single click). cl- and f- are created by choosing the element in the organic model kit. then delete the yellow open valence: click on , then click on the yellow stick. ocl- is created by choosing -cl in the organic model kit. click on , and click the yellow valence on the –cl. then delete the yellow open valence on the oxygen. ch3c(=o)o- and no3- should be created according to vsepr rules. incorrect geometries may not "correct" during the calculation. the total charge is always neutral. if the calculation fails because the geometry optimization ran out of cycles, submit it again. repeat if necessary. when the calculation completes measure the distance between h3o+ and x-. (under geometry, click measure distance, record the distance between x- and the closest of the 3 hydrogen atoms of h3o+.) record the distances as a function of the number of h2o molecules in an excel spreadsheet. your first distance should be recorded for zero h2o molecules. (note: the number of water molecules present is indicated the program frame (bottom,