Use Dalton’s law and the vapor pressure of water at 22 °C (Table 1) to calculate the partial pressure of hydrogen gas in the gas collecting tube.

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.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

yes the answer is total mass in unchanged   : )