Posted by Josh on Saturday, July 16, 2011 at 7:06pm.
After 79 mins 20.0% of a compound has decomposed. What is the half life of this reaction assuming firstorder kinetics?

Chemistry  bobpursley, Saturday, July 16, 2011 at 7:44pm
.2=e^(.693*79/thl)
solve for thlife
take ln both sides
ln.2=.693*79/thl
grab you calculator.