Do light waves and sound waves need a medium to travel through???

What happens when light is scattered?

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid

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?