Experiment 4 Assignment – Chemistry
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College Chemistry I – Chem. 1806
Lab Report 4 assignment
1. Complete the following table. (10 points)
| Data Table 1 | |
| Initial: CaCl2∙2H2O (g) | Click or tap here to enter text. |
| Initial: CaCl2∙2H2O (moles) | Click or tap here to enter text. |
| Initial: CaCl2 (moles) | Click or tap here to enter text. |
| Initial: Na2CO3 (moles) | Click or tap here to enter text. |
| Initial: Na2CO3 (g) | Click or tap here to enter text. |
| Theoretical: CaCO3 (g) | Click or tap here to enter text. |
| Mass of Filter Paper (g) | Click or tap here to enter text. |
| Mass of Filter Paper + CaCO3 (g) | Click or tap here to enter text. |
| Actual: CaCO3 (g) | Click or tap here to enter text. |
| % Yield | Click or tap here to enter text. |
2. A perfect percent yield would be 100%. Based on your results, describe your degree of accuracy. (5 points)
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3. Describe how conservation of mass could be checked in the experiment performed. (5 points)
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4. Determine the quantity of pure CaCl2 in 7.5 g of CaCl2∙9H2O. (5 points)
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5. Is it possible to get a percent yield over 100%? Be sure to explain your reasoning behind your answer. (5 points)
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6. Provide a written summary of your results in your own words. Be sure to explain your results and provide an explanation if anything went wrong in your experiment. (10 points)
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