A reaction is first order overall. For a given sample, if its initial rate is 0.0200 mol L-1
s
-1
and 25.0 days later its rate dropped to 6.25 × 10-4 mol L-1
s
-1
, what is its half-life?
s
-1
and 25.0 days later its rate dropped to 6.25 × 10-4 mol L-1
s
-1
, what is its half-life?