Hey I got a question:
A solid hydrate weighing 2.4 g was heated to drive off the water. A solid anhydrous residue remained,
which weighed in at 1.2 g.
Calculate the % water in the hydrate and if the anhydrous residue has a formula weight of 132, how many moles of water are present in one mole of hydrate?
Can someone show me step by step how to approach this problem?