How to find extrapolated temperature?

WARNING! This is a long answer.

Assume that you are doing a coffee cup calorimeter experiment in which you have to measure ##ΔT##. You measure the temperatures over a period of time and plot a graph.

But the maximum temperature is not that shown on the graph, because the calorimeter is not a perfect insulator. It is constantly losing heat to the room.

The teacher asks you to use Microsoft Excel to extrapolate the data back to ##”time” = 0##.

Here’s how I do it using Excel 2010 for Windows. You may have to modify for your version.

First, watch Mr. Pauller’s video on .

Enter your data into Columns A and B of the Excel spreadsheet.

Assume that your data are:

Highlight the data from A1…B13. Click on Insert Charts.

Click the small triangle under Scatter. Select the first option (the graph with just points and no lines).

You should get a graph that looks like this.

The peak at (5.0, 30.0) has the maximum temperature. The points from 5 min to
12 min are in a sloped but linear region.

Go back to the spreadsheet and copy these values into column C directly across from their values in column B (as in the data table above).

Right-click in a blank portion of the Plot Area. Click on Select Data…

The Select Data Source window will open. Click the Add button.

The Edit Series window will open. Click in the Series X Values space and highlight cells A2…A13.

Delete the entry in the Series Y Values space and highlight cells C2…C13. Click OK, then OK again.

A new series of points appears on your graph.

Delete the entries in cells B7…B13, since they are now duplicated in C7… C13.

Right-click on a point in Series 2. Click on Add Trendline…

The Format Trendline window will open. Choose Linear Trend/Regression. Click Display Equation on Chart. Then Close.

If necessary, move the equation to a clear area on the chart.

The trend line appears and extends back to intersect the ##y##-axis at about 32.5 °C.

You can also set ##x = 0## in the regression equation ##y = 0.5 x + 32.5##. Again you get 32.5 °C for the extrapolated temperature.

Here is the source document for the original answer.

Calculate Your Essay Price
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more

Order your essay today and save 10% with the coupon code: best10