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Graphing Practice Ionization Energy Data The energy needed to remove the most loosely held electron in an atom is called the First Ionization Energy. This energy for the first 18 elements is shown in the table below. Atomic Number 1st I.E. (volts) 1 13.53 2 24.46 3 5.64 4 9.28 5 8.26 6 11.22 7 14.48 8 13.55 9 17.34 10 21.47 11 5.12 12 7.61 13 5.96 14 8.12 15 10.9 16 10.3 17 12.95 18 15.68 A. This data is very accurately measured. Plot the data points and then draw a line graph in "connect-the-dot" fashion. Plant Hormone Data Amount of ethylene in ml/m2 Wine sap Apples: Days to Maturity Golden Apples: Days to Maturity Gala Apples: Days to Maturity 10 14 14 15 15 12 12 13 20 11 9 10 25 10 7 9 30 8 7 8 35 8 7 7 A. Ethylene is a plant hormone that causes fruit to mature. The data above concerns the amount of time it takes for fruit to mature from the time of the first application of ethylene by spraying a field of trees. B. Make a line graph of the data. C. What is the dependent variable? D. What is the independent variable? Experimental Drug & Mice Data An experiment studies the effects of an experimental drug on the number of offspring a mother mouse has. 10 female mice are given the drug and then impregnated. The number of mice in their litters is compared to the litters of mice that did not take the drug. Number of Babies in Litter Group A 5 6 4 8 5 2 7 12 12 8 (drug) Group B 4466564 7 5 3 (control) A. Based on the data, what would you conclude about the drug, did it work? B. What type of graph would best represent the data? Oxygen Production Data Oxygen can be generated by the reaction of Hydrogen Peroxide with Manganese Dioxide. 2H2O2 + MnO2 2H2O + Mn + 2O2 A chemistry class sets up nine test tubes and places different masses of MnO2 in each test tube. An equal amount of H2O2 is added to each test tube and the volume of gas produced is measured each minute for five minutes. The data from the experiment is: Tube # MnO2 (g) 1 min (ml O2) 2 min (ml O2) 3 min (ml O2) 4 min (ml O2) 5 min (ml O2) 1 0.1 1.4 2.6 3.5 4.2 5.1 2 0.2 2.8 4.6 5.8 7.1 7.6 3 0.3 4.9 7.2 8.8 10.2 11.3 4 0.5 5.9 8.5 10.4 11.8 13.3 5 1.0 8.5 12.4 14.4 16.1 17.1 6 1.5 11.0 14.8 17.5 19.8 21.8 7 2.0 12.0 17.0 20.2 22.7 24.8 8 2.5 13.6 19.0 22.1 24.7 27.3 9 3.0 16.2 21.8 25.1 28.2 30.4 A. B. C. D. E. F. What volume of O2 did tube #3 produce between the second and fourth minutes? How much O2 is produced in tube #5 during the first two minutes? How much oxygen did tubes 7 and 8 produce together during the third minute? What volume of oxygen gas, in liters, was produced during this procedure? Graph the amount of oxygen produced each minute in test tubes # 2, 4, and 6. By comparing the slope of the graph curves, which tube was producing oxygen at the fastest rate between minutes four and five? G. Make a graph using the mass of manganese dioxide and the volume of oxygen for all tubes at five minutes. Shark Population Data The population of tiger sharks off the coast of Florida was recorded over several months. January 12 February 15 March 25 April 35 May 34 June 44 July 49 August 55 September 72 October 85 November 98 December 105 The number of nurse sharks was also recorded for this time period; though the person recording the number was not very reliable. The following data was taken on nurse sharks. March 60 April 52 July 38 August 20 November 14 December 11 A. Graph both sets of data together. B. At what month would you expect the number of nurse sharks to equal the number of tiger sharks? C. What does the graph tell you about the trends of both shark populations?