Determine the overall orders of the reactions to which the following rate laws apply: (a) rate = k[NO21?,
(b) rate = k, (c) rate = k[H][Br2]), (d) rate = k[NO][02]

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.