Question: how to calculate mass percent of na2so4?
Answer: Given Element: Na2SO4.
Calculating the Molar Mass Of Na2SO4: = [(2 x 23.0) + (32.066) + 4(16.00)] ... 
Formula Used To Find The Mass Percent Of An Element: ... 
Calculating Mass Percent Of The Sodium Element: ... 
Mass Percent Of The Sulphur Element: ... 
Mass Percent Of The Oxygen Element: