Graphing Practice Problem #2 The volume of a gas decreases as the temperature of the gas decreases. A sample of gas was collected at 100 degrees Celsius and then cooled. The changes in the volume of the sample are shown below.                                            T (*C)                        V (ml)                                            100                           320                                             80                            297                                             60                            288                                             40                            278                                             30                            252                                             20                            243                                             10                            236                                               0                            233                                            -10                            227                                            -30                            202

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Graphing Practice Problem #2 The volume of a gas decreases as the temperature of the gas decreases. A sample of gas was collected at 100 degrees Celsius and then cooled. The changes in the volume of the sample are shown below.

                                           T (*C)                        V (ml)

                                           100                           320

                                            80                            297

                                            60                            288

                                            40                            278

                                            30                            252

                                            20                            243

                                            10                            236

                                              0                            233

                                           -10                            227

                                           -30                            202

Start graph at -350. Start graph at 0.

A. For the data in the data table, graph the data.

NOTE: 1. Start the volume on the graph at zero and consider 1 cm = 20 ml. on the graph.

2. Start the graph at -350 *C. The graph will allow you to extrapolate (extend the graph beyond measured data) the graph to reach a gas volume of 0 ml. The temperature at which the volume of the gas reaches zero is the theoretical temperature of Absolute Zero.

B. Draw a best-fit line for the data points.

C. Find the slope of the line. Slope Equation = ________

 Draw a LARGE triangle on your graph in order to find the rise & run.

 From the triangle, show how you find the rise and the run for the line graph.

 SHOWALL your work on the graph. Write on the graph - Slope = rise run, then put in your values for the rise and run ON YOUR GRAPH.

 Find the value of the slope (in decimal form). Slope = ____________

Analysis Questions: 1. Write two slope equations: Slope = _________ = ___________

2. Write slope value with the unit: Slope = __________

3. What is the y-intercept value? _______________

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