The mass of two moles of anhydrous sodium sulfate na2so4 is 284.08 g.
The mass of a substance can be calculated from the number of moles of the substance using the substance's molar mass. The molar mass of a substance is the mass of 1 mole of the substance, and it is typically measured in grams per mole (g/mol).
To find the mass of two moles of anhydrous sodium sulfate (Na2SO4), we can use the substance's molar mass:
mass = (2 moles) x (142.04 g/mol)
mass = 284.08 g
So, the mass of two moles of anhydrous sodium sulfate is 284.08 g. This is the mass of the substance when it is in the form of Na2SO4.