Question

An atmospheric scientist interested in how NO is converted intoNO₂ in urban atmospheres carries out two experiments tomeasure the rate of this reaction. The data are tabulatedbelow.
A: [NO]₀ = 9.63 × 10^-3 M,[O₂]₀ = 4.1 × 10^-4 M

t(s)	0	3.0	6.0	9.0	12.0
[O2](10-4 M)	4.1	2.05	1.02	0.51	0.25

B: [NO]₀ = 4.1 × 10^-4 M,[O₂]₀ = 9.75 × 10^-3 M

t(s)	0	1.00	2.00	3.00	4.00
[NO](10-4 M)	4.1	2.05	1.43	1.02	0.82

Calculate the rate constant.


Please show all steps.