Determining the Number of Molecules and Atoms

Determining the Number of Molecules and Atoms - Name _ Date...

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Name __________________________________ Date _________________ Sign-Off ________ Lab Partners __________________________________________________________________________ Determining the Number Molecules and Atoms Part 1: Determining the Number of Molecules You will be given ten pennies (made up of copper), a piece of chalk (made up of calcium carbonate), and a small amount of salt. You are to find the number of molecules in each item. A. Number of Molecules of the ten pennies. Find the mass of the pennies. ________In the space below, calculate the number of molecules in ten pennies. Remember to include the correct units. B. Number of Molecules of a piece of chalk. Obtain a piece of chalk (calcium carbonate). Wipe it free of dust particles and measure its mass. ________ Write a message with the chalk and find its new mass. ________ In the space below, calculate the number of molecules consumed. Remember to include the correct units.
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This note was uploaded on 02/14/2012 for the course CH 101 taught by Professor Sutcliffe during the Fall '08 term at University of Texas at Austin.

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Determining the Number of Molecules and Atoms - Name _ Date...

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