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Chemistry Lab

Jillian Beaulieu
Title: Accuracy and Precision in Measurement
Objectives:
1. Determine the volume of a liquid in two different ways and compare the results.
2. Calculate the density of a metal using the measurements of its mass and volume. Compare the results obtained with the accepted value found in the handbook.
3. Average the values for the density of a metal obtained by the entire class to determine the average value.
4. Calculate the average deviation of these data.
Materials:
15 cm plastic ruler, 25 mL graduated cylinder, 100 mL graduated cylinder, balance, metal shot (aluminum, copper, lead), thermometer (nonmercury, 0-100 C)
Procedure:
Part 1.
1. Examine the centimeter scale of the plastic ruler.
2. Using the ruler, measure the inside diameter of the 100 mL graduated cylinder. Similarly, measure the inside height of the cylinder to the 50 mL mark.
Part 2.
3. Examine the gram scale of the balance.
4. Examine the graduations...

Posted by: Helene Hannah

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