Question

Experiments on one type of firefly, Lampyridae photinus, showed that the average interval between flashes of individual insects was 15.8 seconds at 70.0°F and 12.7 seconds at 82.0°F. (a) What is the apparent activation energy (in kJ/mol) of the reaction that controls the flashing? (b) What would be the average interval between flashes of an individual firefly on a typical night in mm where the average low is 55.9℉? (Presumably, active sex lives.) fireflies do not have very I uciferin + luciferase +ATP-→ lucifery( adenjatelucife rade r pyt.phosphase ueiCenyl adonylabe-lue

Answer 1

a)According to Arrhenius equati on 1°C-1.8°F k, T 15.8 sec. ; k,-12.7 sec. T1-70。F ; T, 294.26 °K.; T 300.92 K 15.8 12.7 82°F 8.3 14 J。K'ı mol-1 294.26 "K 300.92 "K 0.218 7.52 x105 8.314 Jmol E, _ 24.1426 kJ mol

RT 24142.6 Jmol1 15.8sec -Ae 15.8sec -A e683) 15.8 9309.3415 - 8.18x10 sec at T 55.9 °F 286.42 °K -24142.6 Jmor k 8.18x10 sec 8.18x10 sec e-110.138) -8.18 10-4 secx 25297.6 - 20.7 sec.