1.) 50.0 mL of a HCl solution was diluted to 350 mL to give a final concentration of 0.80 ml, what was the initial concentration? (Unknown =

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.