Chemlab1 - CHY 123 Phases of Water Introduction A phase...

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CHY 123 Phases of Water Introduction A phase curve is a graph that shows the temperatures and heat change from one phase to another. Every time a substance changes from one phase to another heat is required for the transformation to occur. By observing phase shifts in a substance a phase curve can be created and then the heat of fusion can be calculated. Procedures We took some ice (Trial 1: 22.9g, Trial 2: 70.4, Trial 3: 41.1g) and melted it over a Bunsen burner and recorded the heat change via a thermometer every thirty seconds. We then created some phase shift graphs and calculated the heat of fusion for each trial. Results Time(s) Trial 1 (c) Trial (c) Trial 3 (c) 0 5 5 5 30 9 7 10 60 15 11 16 90 44 20 30 120 80 35 55 150 103 58 83 180 103 83 103 210 104 105 110 240 104 109 110 270 106 110 110 300 107 110 111 Trial 1 0 20 40 60 80 100 120 0 30 60 90 120 150 180 210 240 270 300 Time (s) Temp (c)
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Initial mass (g) 22.9 70.4 41.1 Final Mass (g) 10.6 64.73 19.74 Water evaporated (g) 12.3 5.67 21.36 Trial 2 0 20 40 60 80 100 120 0 30 60 90 120 150 180 210 240 270 300 Time (s) Temp (c) Phase 3 0 20 40 60 80 100 120 0 30 60
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Chemlab1 - CHY 123 Phases of Water Introduction A phase...

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