EXCEL Homework Assignment

1. Change the name of “Sheet 1” to “RawData” and of “Sheet 2” to “Results” by right clicking on the tabs at the bottom of the Workbook, click on rename and then type in the new name. 2. In cell A1, Type “Determination of the Density of H2O: Raw Data”. 3. In cells A2 - A10, B2-B10, and C2-C10 enter the following data and format the data as shown below. m(cyl+H2O), g m(cyl), g Vol H2O, mL 35.912 31.099 5 35.381 30.155 5 36.043 31.12 5 36.026 31.12 5 36.379 31.151 5 36.306 31.11 5 36.037 31.098 5 36.019 31.119 5 4. Format the first and third columns to include 2 decimal places and the middle column to 3 decimal places. 5. Click on the “Results” tab and enter the title “Determination of the Density of H2O: Results” in cell A1. 6. Type the headings: “m(H2O), g” and “d(H2O), g/mL” in cells A2 and B2, respectively. 7. In A3, type a formula that will subtract the value in B3 of “RawData” from the value in A3 also of “RawData”. Copy the formula from A3 in the “Results” worksheet to cells A4 to A10 in this worksheet. This gives you the mass of water for each set of measurements in the “RawData” worksheet. (Check answers for correctness.) 8. In cell B3, type a formula that calculates the density of water from the mass of H2O on this sheet and volume, which appears in cells C3 through C10 on the other Worksheet. Copy and paste this formula to cells B4 through B10. 9. In A11, type the heading: “Mean =” and right justify it. 10. In B11, type a formula to compute the average of the values in column B. 11. In A12, type the heading: “Std dev =” and right justify it. 12. In B12, type a formula to calculate the standard deviation of the same range of cells. 13. Express all numbers on this page to the correct number of significant figures.

ADDITIONAL QUESTIONS

1. How could you improve the layout of the spreadsheet with borders?

2. If your data was on Row 6 of the Spreadsheet, how far are you from the average density of water as shown in this experiment? How far off is the class mean value off from the accepted value for density of water (1.000 g/ml)? 3. Is this data accurate, precise, or both? Why? Where do any measurement uncertainties come from?