[ahawk1]

A certain batch of fireflies were observed to "flash" at the rate of 13.3 times per minute at 25°C and at the lower rate of 5.7 times a minute at a temperature of 15°C. Assume that the flashing is the result of an overall chemical reaction that has a single rate limiting step with the highest activation energy. Use this data to estimate the activation energy for this slowest step. You can assume that the concentrations of "reactants" in the fireflies do not depend on temperature.


what i did was:convert rate into times per second
Ea=8.314*ln(.2217/.095)/(1/298-1/288)


can someone tell me where i went wrong?

[plankk]

Look for the Arrhenius equation. I think you change the sign (confuse with the minus and the plus).