12 Days of Chemical Calculations – 10

A student set out to make some copper (II) oxide from copper (II) sulphate. He took 20.0 cm3 of 0.400 mol dm3 dm-3 copper (II) sulphate solution, added an excess of sodium hydroxide to give a precipitate of copper (II) hydroxide and then boiled the mixture to covert the copper (II) hydroxide into copper (II) oxide.

What is the maximum mass of copper (II) oxide that he could obtain?