A student was isolating copper metal from a copper salt. If the student started with 1.255g of copper (II) sulfate how many grams of copper solid would you expect them to recover?

Answer 1

1.225 g CuSO4 x (atomic mass Cu/molar mass CuSO4) = ?

In reality that CuSO4 probably was CuSO4.5H2O.