A corpse discovered in the desert at 5:00 PM was found to have larvae from the blow fly species Phormia regina that had just developed into the first instar stage. Controlled experiments show that this species requires 16.016.0 hours at 26.7∘ C26.7∘ C to develop from an egg to the first instar stage. The average nighttime temperature in the desert was 22.7∘ C22.7∘ C, and the average daytime temperature was 38.3∘ C38.3∘ C. If the sunset occurred at 9:00 PM and the sunrise occurred at 7:00 AM, how many hours prior to discovery was the corpse placed in the desert?
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
A corpse discovered in the desert at 5:00 PM was found to have larvae from the blow fly species Phormia regina that had just developed into the first instar stage. Controlled experiments show that this species requires 16.016.0 hours at 26.7∘ C26.7∘ C to develop from an egg to the first instar stage. The average nighttime temperature in the desert was 22.7∘ C22.7∘ C, and the average daytime temperature was 38.3∘ C38.3∘ C. If the sunset occurred at 9:00 PM and the sunrise occurred at 7:00 AM, how many hours prior to discovery was the corpse placed in the desert?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
