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CHEM151 Balance lab

# CHEM151 Balance lab - Toothpics vs Pennies y = 23 60 80 100...

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Chemistry 151 January 25, 2008 Balance Lab Performed January 24, 2008 Purpose: The purpose of the lab is to learn how to use a simple balance to measure mass, graph data, and make inferences based on the data. The following data was obtained by balancing pennies and nickels: Nickles Pennies 0 0 1 2 2 4 4 8 8 16 Putting the data onto a graph resulted in a best fit line y=2x. Pennies vs. Nickels y = 2x 0 2 4 6 8 10 0 1 2 3 4 5 6 7 8 Nickles The following data was obtained by balancing pennies and toothpicks. Pennies Toothpics 0 0 1 24 2 47 3 72 Putting the data on a graph resulted in a best fit line of y=23.857x

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Unformatted text preview: Toothpics vs Pennies y = 23.857x 20 40 60 80 100 1 2 3 Pennies This lab allowed me to practice using a balance, graphing data, and making inferences based on that data; thus I believe the objective was met. Since a penny weighs 2.5 g, a nickel must weight 5 g, and a toothpick must weigh about 105 mg. I obtained this information by using the slopes of my best-fit lines. A possible source of error is the accuracy (or lack thereof) of my inexpensive balance....
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CHEM151 Balance lab - Toothpics vs Pennies y = 23 60 80 100...

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