Your stomach is a chemical reactor. When you devour a fast food 99 cent special hamburger in about a minute, it acts like an instantaneous input of 325 g of food entering the stomach (hint: consider it as the initial mass in your stomach). In response, the stomach starts producing gastric liquids (acids), which are continuously excreted into the stomach at a rate of 0.012 L/min as the hamburger is digested. The fluid also leaves the stomach to the small intestine at a flow rate of 0.012 L/ min, so the volume of liquid in the stomach stays constant at 1.15 L. The hamburger digestion rate constant is 0.022 min^(-1).
a. In this problem, is the hamburger conservative?
b. What kind of ideal reactor would you model your stomach as?
c. What is the mass of the hamburger that remains undigested in your stomach one hour (60 min) after you eat the hamburger?
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