If you need to produce 9.75 moles of iron(III) oxide (Fe2O3), how many moles of iron will be required? *

Thus 9.75 moles of iron will be required.

Explanation:

The balanced chemical reaction is:

According to stoichiometry :

2 moles of are produced by= 2 moles of

Thus 9.75 moles of are produced by=  of

Thus 9.75 moles of iron will be required.

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.