5. A scuba driver has a 10 L tank that is filled with Nitrox or otherwise known as "enriched air. Therefore, it contains 5.00 g of oxygen gas (O2) and 8.31 g of nitrogen gas (N2). The pressure of the tank is 179.6 atm. What is the partial pressure of both oxygen and nitrogen?

Answer : The partial pressure of both oxygen and nitrogen is, 61.8 atm and 117.8 atm respectively.

Explanation :

First we have to calculate the moles of and

and,

Now we have to calculate the mole fraction of and

and,

Now we have to calculate the partial pressure of both oxygen and nitrogen.

According to the Raoult's law,

where,

= partial pressure of gas

= total pressure of gas  = 179.6 atm

= mole fraction of gas

and,

Thus, the partial pressure of both oxygen and nitrogen is, 61.8 atm and 117.8 atm respectively.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.