Consider the oxidation of thiosulfate (S2O3 2- ) to sulfate (SO4 2- ) and the reduction of hypochlorous acid (HOCl) to chloride (Cl- ). a. Write the oxidation half-reaction. b. Write the reduction half-reaction. c. Write the overall balanced reaction. d. Determine the number of electron equivalents per mole for HOCl in this reaction.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?