Calculate the required mass of sodium sulfate to prepare 225 grams of sodium sulfate solution in which the mass fraction of sodium sulfate is 0.12!

Sodium sulfate is very often available not as the anhydrous salt, but in the decahydrate form (bound with 10 water molecules). Calculate the required mass of sodium sulfate decahydrate to prepare those 225 grams of sodium sulfate skid, whose mass fraction of sodium sulfate is 0.12!

Estimate the volume of water required for the preparation of the above-mentioned liquid, if the liquid is prepared from sodium sulfate decahydrate!