1) Visit five (5) stations. Record the mass of the sample in the data table. (1 pt each)
2) Use the periodic table to determine the molar mass of the substance. (1 pt each)
3) Use dimensional analysis to convert from grams to moles. (2 pts each)
4) Then use dimensional analysis to convert from moles to individual atoms. (2 pts each)
5) You must show all of your work and include all units!
Data Table:
Substance    Mass (g)   Molar Mass (g/mol)    Moles (mol)    Atoms
Fe                8.20g
Bi                29.47g
Si                12.38g
A                   8.05g
Zn                41.64g
1) Post-1983 pennies are 97.5% zinc and 2.5% copper. The mass of a penny is 2.49 g. Determine how many atoms of zinc and how many atoms of copper make up the penny. Show all of your.
2.49g X 0.025= _ g Cu
2.499 X 0.975= _ g Zn

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