How many so32- ions are contained in 99.6 mg of na2so3? the molar mass of na2so3 is 126.05 g/mol.

Answer : The number of ions are,

Explanation : Given,

Mass of = 99.6 mg = 0.0996 g

Conversion used : (1 mg = 0.001 g)

Molar mass of = 126.05 g/mole

First we have to calculate the moles of .

Now we have to calculate the number of .

As we know that, dissociate to give 2 moles of and 1 mole of .

From this we conclude that,

As, 1 mole contains number of ions

So,  mole contains number of ions

Therefore, the number of ions are,

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.