B Bailey New member Jan 20, 2011 #1 the elapsed time? known: original amount= 20.0g remaining amount=0.573g half life=2.6 hours unknown: elapsed time:? step by step instructions would be amazing
the elapsed time? known: original amount= 20.0g remaining amount=0.573g half life=2.6 hours unknown: elapsed time:? step by step instructions would be amazing