Como balancear ecuaciones quimicas paso a paso empleando el metodod de tanteo o ensayo por error​

Oxidation state of iron in mohrs salt

One does not belong why? ice, gold ,wood ,diamond and table salt

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?