Percent Water Composition Activity

 

Substance Test Tube Mass (empty) Test Tube w/Substance Test Tube after Heating Mass of Dry Substance Mass of Water % Water
             
             
             

Analysis:

1. Calculate moles of water evaporated from each substance.

2. Calculate moles of dry substance.

3. Determine empirical formulas using mole ratios and name for each substance. (_______ *__H2O)