A250-ml sample of carbon dioxide gas with a pressure of 825 torr expands under constant temperature to a new volume of 400 ml

initial volume(V1)=250 ml

initial pressure(P1)=825 torr

final volume(V2)=400ml

final pressure(P2)=?

At constant temperature,

PV=constant

i.e.

P1V1=P2V2

or, 825×250=P2×400

or,P2=515.625 torr

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.