Write up - A. Research Question How many moles of water are...

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A. Research Question How many moles of water are contained within the crystalline structure of Barium Chloride Hydrate? B. Theoretical Approach In order to determine the amount of H 2 O in BaCl 2 ·xH 2 O, the sample was heated to evaporate the water out in order to determine the mass of the water lost. This was used to calculate the moles of each BaCl 2 and H 2 O. Using the moles in a ratio, the correct chemical formula was obtained. C. Observation Mass Measurements Measurement Mass (g) Mass of clean crucible + lid 31.897 Mass of crucible + lid + hydrate 34.926 Starting mass of hydrate 3.029 Final mass of crucible + lid + hydrate (after 3 rd heating) 34.470 Mass remaining after heating hydrate 2.573 Mass lost upon heating the hydrate 0.456 Final Data Analysis Determination Value Mass of anhydrous BaCl 2 sample 2.573 g Mass of water in original hydrate sample 0.456 g % by mass of H 2 O in the original hydrate sample 15.1% Mass of sample used for analysis 3.029 g Moles of water in sample
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This note was uploaded on 10/16/2011 for the course CHEM CHEM111 taught by Professor Deeannforce during the Fall '11 term at Boise State.

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Write up - A. Research Question How many moles of water are...

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