Write the electron configuration notation, orbital notation, and Noble Gas notion for Phosphorus and Krypton

Modern weaponry has increased the number of deaths in wars and violent conflicts.

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?

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy