Which of the following ranching practices contributes to soil erosion?
a.
grazing the same type of animal on the land for many years
b.
allowing fields to remain empty and unused.
c.
overgrazing of livestock
d.
grazing more than one type of animal on the land

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.