If 23.6 g of hydrogen gas reacts with 28.3 g of nitrogen gas, what is the actual yield of ammonia? ?N2(g) + 3H2(g) ? 2NH3(g)

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.