Data:
|
|
|
|
0.44
|
5.0
|
|
1.33
|
15.0
|
|
2.12
|
24.0
|
|
4.60
|
52.0
|
|
5.66
|
64.0
|
|
7.17
|
81.0
|
|
8.41
|
95.0
|
|
8.94
|
101.0
|
|
12.60
|
142.0
|
|
13.50
|
153.0
|
Procedure:
- Create a plot of mass versus volume.
The independent variable, volume, always goes on the x-axis. The
independent variable is the
variable over which the experimenter has control. Input the
data for this
variable into List 1 on your calculator (L1).
The dependent variable, mass, is placed on the y-axis. Input the
data for this
variable into List 2 (L2).
For you information: To edit the lists in your calculator, go to STAT and then EDIT. Clear the lists and enter your own data.
Be certain to label the
axis with both the
variable and its UNITS.
Make certain to give your
graph a title.
- Draw a trend line, or line of best fit, through your data points.
Do not connect the dots! The
line you draw reflects the best average
data fit. To do this in your calculator, go to [STAT], [CALC], [LinReg L1, L2]. Next, go to [y=], [VARS], [STATISTICS], [EQ], [RegEQ], [ENTER]. Hit [Zoom][9] to fit the
line to your screen.
- Calculate the slope of the line by locating two points on the line.
-
Conclusions:
-
Use the information in the following
chart to determine which substance was involved in this experiment?
|
Substance
|
|
|
Copper
|
8.92
|
|
Lead
|
11.3
|
|
Gold
|
19.3
|
-
Using your graph, determine the
mass of 10.0 mL of material. You can do this by using the [TRACE]
function on the calculator.
-
What is the
volume of 30.0 grams of material?