Use the bond energies provided to estimate δh°rxn for the reaction below. hint: draw the lewis structures for reactants and products to determine the number of bonds pcl3(g) + cl2(g) → pcl5(l) δh°rxn = ?

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?

The following data was collected when a reaction was performed experimentally in the laboratory ; determine the maximum amount of alcl3 that was produced during the experiment explain how you determined this reactants products al(no3)3 nacl. nano3 alcl3 4 moles 9 moles ? ?