All but one of the following is a function of the low ph found in the stomach. select the description below that does not reflect a role of stomach acid.
a) the stomach's acid catabolically breaks down food stuffs in preparation for absorption. b) stomach acid denatures proteins making the poly peptide chain more accessible to pepsin digestive enzymes. c) many potentially harmful bacteria will be prevented entry to the small intestine by stomach acid. d) low ph converts pepsinogen to its active form of pepsin, preventing the protease enzyme from digesting the cells that produce it.

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.