Answer to Question #129575 in General Chemistry for Alida Divine

Question

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. [3]

(b) Determine the empirical formula of the unknown solid. [1]

(c) Through mass spectrometry, the molecular mass was found to be 420 g/mole. What is the molecular formula? [1]

(d) How many aromatic rings could this compound contain? [1]

(e) Using the information and the internet, give the possible chemical name and structure of the compound in (c). [2]

(f) Give a reason(s) for your selection of compound in 

Answer 1

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