You are cooking a chicken in the oven at tambient-375 f. initially the chicken has been thawed and is at room termperature, 72 f. the chicken is spherical roughly, with a diameter of 18 cm. you need to cook the chicken to a safe center temperature of 165 f. find how long it takes to cook the chicken in a convection oven with hou-50 w/m2-k. neglect any reactions that occur in the chicken meat. state any assumptions and your approach clearly. a) can you use a lumped analysis? provide justification b) time for t to reach 165 f in convection oven

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.