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2.4: Practice Graphing

  • Page ID
    124510
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    Practice Graphing

    Table 1. A table containing simulated osmosis data to practice calculations and graphing.
      0 min 10 min 20 min 30 min
      Initial Weight Total Weight Change in Weight Total Weight Change in Weight Total weight Change in Weight
    Bag A 20g 19.5g   12.2g   11g  
    Bag B 20g 20.1g   20.1g   20.1g  
    Bag C 20g 22.3g   25.5g   27.7g  
    Bag D 20g 27g   29.2g   32.3g  

    The graph shows an example of what your data will look like after you conduct today's experiment. Follow your instructor's directions on how to fill out the data table and complete the graph on the next page.

    1. Record the change in weight by subtracting the Total Weight from the Initial Weight. Use a "+" symbol if the change in weight was a gain in weight from the initial weight. Use a "-" symbol if the change in weight was a loss in weight from the initial weight.
    2. Use the practice graph page to construct a line graph with Change in Weight (g) vs. Time (min). Set the initial weight as “0” and plot each data point as change in weight since the initial weight. Your instructor will show you an example of how to complete the graph.

    Questions

    1. Using the data from the example table above, which bag(s) lost weight? Does this mean that bag was surrounded by a hypertonic or hypotonic solution?



    2. Using the data from the example table above, which bag(s) gained weight? Does this mean that bag was surrounded by a hypertonic or hypotonic solution?


    3. Using the data from the example table above, did any bag not change in weight or experienced a very small change in weight? Does this mean that bag was surrounded by a hypertonic, hypotonic or isotonic solution?

    This page titled 2.4: Practice Graphing is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by .