1. The problem statement, all variables and given/known data In a first order decomposition in which the rate constant is 0.03 sec-1, how much of the compound (in mol/L) is left after 39 sec, if there was 2.00 mol/L at the start? I'm using a few equations and trying to plug it in but I don't know whether they are appropriate or not. The answer is .621 but I'm not sure how to get there 2. Relevant equations Ln(A(initial) /A(final) = -kt A(final) = -KT + A(initial) 3. The attempt at a solution I've tried plugging into these equations but haven't gotten the right answer yet. Are these the correct equations to use?