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Part 1 : Actual Lab Directions 1. Use actual directions from lab. Either using copper or magnesium for metal. Part II: Burning Magnesium Strip in Air Directions 1. Mass magnesium strip. 2. React magnesium strip. 3. Brush off product and remass any unreacted magnesium. Calculation: To be completed for each three parts. 1. Determine the experimental mass of metal 2. Determine experimental mass of metal oxide product 3. Determine experimental mass of oxygen 4. Calculate moles of metal and oxygen. 5. Determine experimental Empirical formula |
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2. When determining the empirical formula for this product, what two laws are use basing your calculations on? 3. If you lost some of the product before massing, how would that change the empirical formula calculations? 4. Can this product have a molecular formula? Your explanation should include a discussion of which type of compound (molecular and/or ionic) you can use for empirical and molecular formulas. |
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2. Write out the balance chemical reaction including phases for this reaction. 3. When determining the empirical formula for this product, what two laws do you base your calculations on? 4. If you lost some of the product before massing, how would that change the empirical formula calculations? Explain 5. When you finished heating the sample (to form product), you found some metal solid unreacted. You did not subtract the weight of the unreacted metal from the initial amount of metal, how does that change the empirical formula of the solid? 5. Can this product have a molecular formula? Your explanation should include a discussion of which type of compound (molecular and/or ionic) you can use for empirical and molecular formulas. |
Questions
1. From Part I, what is the correct chemical formula for the product and what are observations of the product. (i.e. green solution, etc.)?
(may need to look in the Chemical Dictionary to determine the exact formula).
2. Write out the balance chemical reaction including phases for this reaction.
3. When determining the empirical formula for this product, what two laws do you base your calculations on?
4. If you lost some of the product before massing, how would that change the empirical formula calculations? Explain
5. When you finished heating the sample (to form product), you found some metal solid unreacted. You did not subtract the weight of the unreacted metal from the initial amount of metal, how does that change the empirical formula of the solid?
5. Can this product have a molecular formula? Your explanation should include a discussion of which type of compound (molecular and/or ionic) you can use for empirical and molecular formulas.