Measurment Lab, Thursday 9;30.pdf - Your Name Antony Toropov Lab Partner’s Name Nhi Y Pham Lab Section Thursday 9:30 Post-Lab CHEM 121 Experiment 1

Measurment Lab, Thursday 9;30.pdf - Your Name Antony...

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Your Name: Antony Toropov Lab Partner’s Name: Nhi Y Pham Lab Section: Thursday 9:30 Post-Lab CHEM 121 Experiment 1: Methods of Measurement Instructions Part 1: Determining the Accuracy of Your Measuring Tools ( 4 pts ) Temperature of Water (°C): 20.0 Density of Water Chart Part 2: Determining the Density of an Unknown Object ( 4 pts ) Color of Object: Shiny Rose Gold Mass of Object (g): 71.123 Average Volume of Object (mL): 8.2 Density of Object (g/mL): 8.7 100 mL Beaker 50 mL Graduated Cylinder 50 mL Volumetric Flask 10 mL Syringe Mass of Tool (Empty) (g) 63.049 84.644 (open top) 41.280 9.127 Mass of Tool with Water (g) 108.045 134.144 (open top) 90.963 19.370 Mass of Water (g) 1 44.996 47.500 49.683 10.243 Calculated Volume of Water (mL) 2 45.08 47.59 49.77 10.26 Percent Error (%) 3 10 5 0.5 3 Trial # 1 2 3 4 Initial Volume (mL) 25.0 30.0 37.1 19.2 Volume After Object Added (mL) 33.0 38.0 46.1 27.1 Volume of Object (mL) 8.0 8.0 9.0 7.9 Last modified 9/11/2018
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Discussion 1) In Part 1 , which piece of the measuring tools would you expect to be the most accurate (just based on your own knowledge and the markings on it)? Which one would you expect to be the least accurate? Briefly explain why! ( 1 pt )
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  • Spring '11
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