final yes 05_Enthalpy_PostLab_Spr24

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Chemistry

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Feb 20, 2024

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Enthalpy and Specific Heat Name: Arnesha Jackson Date of Work Feb. 7th 2024 TOTAL: 20 points
Arnesha Jackson Enthalpy and Specific Heat Page of 2 8 CHM 113 POST-LAB Enthalpy and Specific Heat 1. Insert ONE picture of yourself in full PPE here ( include the Styrofoam cup ). **Remember to (1) show your full body so that we see you are wearing shoes; (2) wear your safety glasses and gloves; (3) cover your lower legs (socks are required, even in Arizona); (4) tie back long hair in a ponytail or a bun; (5) remove jewelry.
Arnesha Jackson Enthalpy and Specific Heat Page of 3 8 2. Complete Table 1 with your experimental data for the masses of the water and the unknown metal strip in Part 1 . 3. Complete Table 2 with your experimental data for the temperature changes for the water in your calorimeter in Part 1 , and calculate the temperature change ( Δ T) for each trial. Show your work for calculating Δ T below the table and include units. Calculations of Δ T water Trial 1: 21.8C-17.4C = 4.4C Trial 2: 23.1C- 18.2C = 4.9C Trial 3: 21.9C - 18.4C = 3.5C Table 1: Mass Data Mass (g) Trial 1 Trial 2 Trial 3 Water 49.9g 50.1g 49.5g Metal Strip 23.6g 23.6g 23.6g T = T final T initial Table 2: Specific Heat Data Time (minutes) Calorimeter Water Temperature (°C) Trial 1 Trial 2 Trial 3 Initial 17.4 C 18.2 18.4 1 minute 22.4 C 22.4 21.5 2 minutes 22.0 C 22.4 21.6 3 minutes 21.9 C 22.7 21.7 4 minutes 21.9 C 22.9 21.8 5 minutes 21.8 C 23.1 21.9 Δ T water 4.4 C 4.9 C 3.5 C
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