a mass of 2.50g of hydrated copper(II) sulfater is placed in a crucible and heated. On heating, 1.59g of white anhydrous copper(II) sulfate is left…

a mass of 2.50g of hydrated copper(II) sulfater is placed in a crucible and heated. On heating, 1.59g of white anhydrous copper(II) sulfate is left behind. Determine the ratio of water to copper(II) sulfate.