Astudent performs a kinetic experiment on the first-order kinetics of the reaction: n2o42no+o2. she calculates the first-order decomposition of the reactant using the relationship: [n2o4]t=[n2o4]0e-kt using the first-order rate constant k = 0.750 s-1 and the following data: initial mass of n2o4: 25.7  0.3 g, initial volume of n2o4: 0.22 0.01 l, and time t = 3.8  0.2 s. use error analysis to calculate her reported concentration of n2o4 including the range of uncertainty.