PLSS HELP
Which neutral element can be described by this Photoelectron Spectrum?

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?

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

What is the percentage of hydrogen in c2h4