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Recall the method you used to count the objects in the sandwich bag you received in class and the results you obtained.a. Explain what you were trying to i nd out.b. Explain the method you used.c. Show your calculations and results.d. Calculate the percent error. Explain how you might modify your procedure to reduce the percent error.

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Chemistry 101

Chapter 14

Measuring Toxins

Section 2

Counting by Weighing

Atoms, Molecules and Ions

Composition

University of Central Florida

Rice University

Drexel University

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Okay, so here we're looking at, um, percentage ever. So let's take a look at, uh, the equation to calculate percentage area, so percent error, 4% e abbreviate. It is equal to, um, your experimental out value. So value experimental. Yes, P um minus you're accepted Value a C c. Divided by, uh, the accepted value. And this is all multiplied by 100%. There is a condition under which percentage error can be negative, and that's if the accepted value is larger than the experimental, and that's that.

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