Your stomach is a chemical reactor. When you devour a fast food Samosa in
about a minute, it acts like an instantaneous input of 325 g of food entering
the stomach. In response, the stomach starts producing gastric liquids (acids),
which are continuously excreted into the stomach at a rate of 12.0 mL/min as
Samosa is digested. The fluid also leaves the stomach to the small intestine at
a flow rate of 12.0 mL/min, so the volume of liquid in the stomach stays
constant at 1.15 L. The Samosa digestion rate constant is 1.33 hr-1.
What fraction of Samosa mass will remain undigested in your stomach one
hour after you eat the Samosa?