Answer all questions 1 to 4 pre 1. if you wish to determine the activation energy of the reaction: 5br + brog. + 6h+ ? 3br2 + 3h2o what graph would you need to plot and how would you go about determining the e,? (1 mark) 2. the activation energy for a reaction is found to be 80kjmor. calculate the (3 marks) temperature at which the rate will be ten times that at o°c 3. complete and balance the chemical equation: kbros+ kbr+ h2so4- (1 mark)