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{"ops":[{"insert":"A researcher analyzed an unknown solid, extracted from the bark of spruce trees, to determine its percentage composition. An 11.32 mg sample was burned in a combustion apparatus. The carbon dioxide (24.87 mg) and water (5.82 mg) were collected and weighed. From the results of this analysis, calculate the percentage composition of the unknown solid.\t\t\t\t\t[3]\n\n(b) Determine the empirical formula of the unknown solid.\t\t\t\t\t[1]\n\n(c) Through mass spectrometry, the molecular mass was found to be 420 g\/mole. What is the molecular formula? \t\t\t\t\t\t\t\t\t\t[1]\n\n(d) How many aromatic rings could this compound contain?\t\t\t\t\t[1]\n\n(e) Using the information and the internet, give the possible chemical name and structure of the compound in (c).\t\t\t\t\t\t\t\t\t\t[2]\n\n(f) Give a reason(s) for your selection of compound in\u00a0\n"}]}
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