(a) Calculate [NO2] at each time interval, based on [O2]. Assume initial [NO2] = 0.0 mol/L.

how do i calculate NO2 at this time intercal

so when t= 600s O2 in mol/l = 0.0021

To calculate the [NO2] at a specific time interval, you need additional information such as the rate of the reaction or a rate constant. Without this information, it is not possible to directly calculate the concentration of NO2 at a specific time.

However, if you are provided with the rate of the reaction or rate constant, you can use the rate law equation to determine the change in concentration of NO2 over a given time interval. The rate law equation for a general reaction is given as:

rate = k[A]^m[B]^n

Where:
rate is the rate of the reaction
k is the rate constant
[A]^m and [B]^n are the concentrations of reactants A and B, respectively, raised to their respective reaction orders (m and n)

Unfortunately, without knowing the specific reaction and rate laws, I cannot provide a direct calculation for [NO2] at t = 600s based on [O2] = 0.0021 mol/L.