B. Formula of a Hydrate
1. Mass of crucible 32.16 g
2. Mass of crucible and hydrate 40.94 g
3. Mass of crucible and anhydrate 36.48 g
Calculations
4. Mass of hydrate (3-1) ___ g
5. Mass of anhydrate (4-1) ___ g
6. Mass of water lost (4-5) ___ g
7. Percent water (Show calculations.) ___ %
8. Moles of water (Show calculations.) ___ moles
9. Moles of salt (anhydrate) (Show calculations.) ___ moles
10 Ratio of moles of water to moles of hydrate ___
11 Formula of hydrate MgSO4 • ___ H2O
Questions and Problems
Q5 Using the formula you obtained in B11, write a balanced equation for the dehydration of the MgSO4 hydrate used in the experiment.