Date Name Grade Pre-Lab Questions: Properties of Hydrates MUST be completed before an experiment is started. Show all work and report your answer with the appropriate units and significant digits. QI Cobalt (II) chloride is commonly obtained from chemical suppliers as a hydrate with the formula Co Cl What is the percent water by weight in this hydrate? ,0 02. A hydrate of sodium phosphate, Na,PO4, contains 49.7% water by weight A) How many grams of water and how many grams of anhydrous Na,PO, are in 1000. grams of this sample? B) In this same 1000-g sample, how many moles of water and how many moles of anhydrous Na,PO, are present? C) What is the formula of the hydrate? CHEM-01A- Experiment E: Properties of Hydrates