How complete (in%) is the reaction after this time has passed?

N205 is an important chemical in atmospheric chemistry. It decomposes in a first-order reaction with k = 5.00x104 s'1. An initial amount [A] is released to theatmosphere and after 244 seconds the concentration is 6.10x10 3 M. How complete(in %) is the reaction after this time has passed? Hint: It is asking for how complete thereaction is- what percentage of material you have used up. It is not asking what % ofmaterial is remaining!75,0% completeO88.5% complete43.1% complete62.0% complete11.5% complete