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Table A Temperature of water 2012 Density of water from the table): Addition Mass (9) 8 8.172 Addition Mass (9) Volume (mL) 8. we 1 9 9.08 9.33 2 10 3 Volume (mL) 1.20ml 2-10ml 3.66 m 5.1omy 5.77 ml 6.33ml 7. 55mL 11 0:9.49 1.849 3.429 4.80g 5.51g 6.45 g 7. 19 g 4 12 5 ಪ | ಸ. 13 6 14 7 Note: you may not need all of the rows in table A Table B Temperature of water. 2 2.21 Volume of water (as read from the pipette) Mass of water transferred by the pipette Density of water (from the table): 2997678 Tome 12.309 Density of water (from the table): 603 260 20mL Table C Temperature of water. 216 Volume of water (as read from beaker) Mass of water in the beaker 169 Table D Temperature of water. 24.1 Density of water from the table): 200-970 Volume of water (as read from the graduated cylinder) 20mL Mass of water in the graduated cylinder 18.89 CALCULATIONS SHOW YOUR WORK (questions are always INDIVIDUAL work, not group work) Part A (5 pts.) 1. Using graph paper supplied by your instructor, carefully draw a graph of the mass and volume data from Table A Plot mass versus volume (mass=y-axis, volume = x-axis). Read the guidelines for preparing a good graph on the handout. Staple this to your report. 2. Calculate the slope of the best-fit line on your graph (choose two positions, not data points on the line that are far apart). The slope is the change in mass divided by the change in volume. Show your work on the graph POM
SHOW YOUR WORK (questions are always INDIVIDUAL work, not group work) Note that calculating the % error requires applying the sig fig subtraction rule first and then the sig fig division rule Use the appropriate rules for significant figures at each step of the calculation, but only round once at the end. CALCULATIONS Parts B-D: Calculations Part 8: pipette Use your measurements to calcutate the density of water ten gyme) transferred by the pipette 2 Use your recorded temperature and the density table to look up the expected (theoretical) value. Calculate the percent error using your answer to B1 as the experimental value. Be careful with significant figures Part C: beaker 1 As in question B1. calculate the density of water in the beaker 2. As in question B2, compare this value with the theoretical density of water by calculating the percent error Part D: graduated cylinder 3 As in questions B18 C1, calculate the density of water in the graduated cylinder. 4 As in questions B2 & C2, compare this value with the theoretical density of water by calculating the percent error
CONCLUSIONS: 1. What physical property does the slope of the line from your graph provide about the water? How does it compare to the expected result? Use complete sentences 2 in one or two complete sentences, rank your glassware from parts B, C, and D: least accurate to most accurate You must refer to your data and calculations to support your claims. Did you expect these glassware to give these results? Why or why not? Use complete sentences Which type of balance is less precise: the top-loading balance or the analytical balance? Explain. Use complete sentences