Which of the following is a scientific question? why do leaves change color? what time will the next earthquake happen? what is the best flavor of ice cream? where is the fountain of youth?

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?