Ozone slowly breaks down into oxygen gas in a second order reaction with a rate constant of 0.013917 M-15-7. (This is the uncatalyzed reaction; a catalyst such as chlorine makes the reaction faster by changing the mechanism and rate law.) 203(g) 3 O2(g) An initial O3 concentration of 0.0555 M is monitored until it has decreased to 0.0333 M. How long did this take, in seconds? Your answer should be rounded to three significant digits and include s as the unit. Answer: 26.75 X The same general information about the uncatalyzed ozone reaction in Question #3 is used in Question #4. If the reaction with initial concentration of 0.0555 M is monitored for exactly 2 hours, what concentration of ozone remains when the 2 hour measurement is taken? Your answer should be rounded to three significant digits and include a unit. Answer: 1.00M X