How much mass do 2.6 moles of gold contain

512.114 g

We are given;

we are required to calculate the mass of gold

Mass = Moles × molar mass

In this case;

Mass of Gold = 2.6 moles × 196.967 g/mol

                      = 512.1142 g

                      = 512.114 g

Thus, the mass of gold is 512.114 g

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.