Which represents the correst equilibrium constant expression for Cu(s) +2Ag<> Cu^2 (aq) +2Ag(s)

When the volume and number of particles of a gas are constant which of the following is also constant

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?

Which material burns faster? metal aluminum