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To find the percent composition of water in an unknown hydrate. 2. Materials: Goggles, apron, evaporating dish, hot plate, and stirring rod 3. Procedure: get the mass Of a evaporating dish, put a sample Of the hydrate onto the evaporating dish and mass the dish with hydrate. Put the dish with hydrate on the hot plate on high heat.

Break up any clumps that form during the heating process. Observe any color changes visible and take off heat after 5 min.Let the sample cool and re-nanas it. 4. Data: I Sample ID # 4708 hydrate Mass in grams I Misappropriating dish Imams of Evaporating dish and 148. 14 | 1. 06 I Imams of Imams of Evaporating dish and anhydrous salt 4802 | 0.

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Data analysis: Imams Of anhydrous salt I Mass of water evaporated I True % Of water for sample 1. You must allow the evaporating dish to cool because you could burn yourself or others and you could damage the scale because the evaporating dish is so hot, 2.If the anhydrous salt is not measured immediately after cooling than the anhydrous salt will absorb water trot the air around it, which will make the data incorrect, 6. Conclusion: In this lab an attempt was made to record the composition of water in an unknown hydrate. It was determined that the composition of water in our hydrate was II . 32 Possible errors include 3 lack Of Other hydrates to test and lack of fresh materials to attempt the lab with.

Without these errors our data could have been more precise and we could hue something to compare the data with.

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