At elevated temperatures, nitrous oxide decomposes according to the equation
$$2 \mathrm{N}_{2} \mathrm{O}(g) \longrightarrow 2 \mathrm{N}_{2}(g)+\mathrm{O}_{2}(g)$$
Given the following data, plot the appropriate graphs to determine whether the reaction is zeroth, first, or second order. What is the value of the rate constant for the consumption of $\mathrm{N}_{2} \mathrm{O} ?$
Time (min) 0 60 90 300 600
[N2O] 0.250 0.228 0.216 0.128 0.0630