For a second order reaction (2A – Products). The initial concentration of A is 0.80 M and the rate constant is 0.01 Mºls-? Approximately how long will it take for
the concentration of Ato decrease from 0.80 M down to 0.30 M?
210 s
0.025
100
160 s

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.