I will pick the brainiest answer! Thanks! :)

1: putting out burning chemicals

2:both precise and accurate

pass or cause to pass easily or gently through or as if through the air.

and i dont have an explanation for the second one

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.

answerspecific gravity;