Question

The total pressure of a mixture of CO2 and O2 is 780 mmHg. If the pressure of the CO2 is 560. torr, what is the pressure of O2?. What is the process that occurs in this system? a)filtration b)osmosis c) hydration d) dialysis. Which of the following also occurs in this system? a) water flows equally in both directions b)water does not cross the membrane at all c) There is a net flow of water from the 4% starch solution into the 10% starch solution d) There is a net flow of water from the 10% starch solution into the 4% starch solution e) Starch moves out of the 10% starch solution into the 4% starch solution.

Answer 1

i think it is two different parts of the question

first one - total pressure is 780 mmHg.

Ptotal = PCO2 + PO2

PO2 = Ptotal - PCO2 = 780 - 560 = 220 mmHg.

the pressure of O2 is 220 mmHg.

second part:

the process is osmasis a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one.

so the answer for the other part will be There is a net flow of water from the 4% starch solution into the 10% starch solution because solvent (water) moving from low conc. (4 %) to high conc. (10%)