Pls ! in another experiment, 1.490g of zinc reacted with excess hydrochloric acid. the released hydrogen gas was collected using the water displacement method at temperature 23oc and pressure 99.99knm-2. the vapour pressure of water at this temperature is 2.81knm-2. calculate the volume of the dry hydrogen gas collected.

try answer.com that works for me

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.

i think its 100

i hope this !

it's c (engineer's do their work with mechanical stuff not on any living being)