posted by jess .
how do i solve the following problem?
Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction:
2NO2 → 2NO + O2
In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of
Disappearance of NO2 for this period is __________ M/s.
3.5x10^-5 is supposedly the answer, but how do i get to that answer?