Consider the following balanced chemical equation: H2O2(aq)+3I(aq)+2H+(aq)I3(aq)+2H2O(l) In the first 16.8 seconds of the reaction, the concentration of H2O2 decreased from 1.04M to 0.28M. What is the average reaction rate over this time interval (in molL1s1 )? Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 104" should be entered as "4.32E4