If you are given the elemental composition … 4. See your classroom teacher for specific instructions. To calculate the empirical formula, enter the composition (e.g. subscripts for Zn & Cl) Results Table: Moles of zinc. As the first step, use the percent composition to derive the compound’s empirical formula. Complete the folowing and submit your answers as a word document in Canvas. Percentages can be entered as decimals or percentages (i.e. Show sample calculations in a separate section. Use a periodic table and the formula of th anhydrous salt. 2- The mass percent of water in a hydrate of MnCl2 is 36.41%. Determining the molecular formula from the provided data will require comparison of the compound’s empirical formula mass to its molar mass. If your results are not within 0.03 grams of your previous heating, reheat, cool, and weigh until it does! (This may take several heatings).How does your experimental empirical formula compare to the theoretical empirical formula - do they match? 32.4% sodium 22.5% sulfur 45.1% oxygen 6. If your results come within 0.03 g of the mass of the previous heating, begin your calculations. ![]() After allowing it to cool again (with the lid completely on), reweigh the crucible and its contents.
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