How to separate a mixture of iron filling and water

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.

How do you interpret a chromagram for what mixtures contain?

If you had to research a particular disease or area of concern in veterinary medicine and science, which one would you choose? why?