The namesake of this law also wrote a thesis on hydraulic mortars and determined the composition of plaster of Paris, while Paul Samuelson introduced an application of this chemical law to economics.  
The namesake of this law also wrote a thesis on hydraulic mortars and determined the composition of plaster of Paris, while Paul Samuelson introduced an application of this chemical law to economics.  Knowing the pressure before and after is only important if either the reactants or the products are gaseous, and, if there are the same numbers of moles of gaseous molecules on both sides, there will be no predicted change.  An example is watching the color change in a syringe of NO2 and N2O4 as it is pulled, as NO2 is a brown gas and N2O4 is a colorless one.  It is applied in the Haber process when the ammonia that is produced is removed from the solution so that the reaction will produce more of it.  FTP, name this rule that states when a reaction is subjected to a stress it will shift to counteract that stress.
The namesake of this law also wrote a thesis on hydraulic mortars and determined the composition of plaster of Paris, while Paul Samuelson introduced an application of this chemical law to economics.  
{LeChatlier's} principle