Empirical and Molecular Formulas Problems
This is the homework assignment for 11/16 (due Tuesday 11/17). When writing the empirical and molecular formulas, please list the elements in the order they appear in the problem.
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What is the empirical formula of a compound that is 40.1% C, 6.6% H and 53.3% O? *
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Allicin is the compound responsible for the characteristic smell of garlic. An analysis of the compound gives the following percent composition by mass: 44.4% C, 6.21% H, 39.5% S, 9.86% O. Calculate its empirical formula. *
Additional analysis reveals that allicin has a molar mass of about 162 g/mol. What is its molecular formula? *
Peroxyacylnitrate (PAN) is one of the components of smog. It is a compound of C, H, N and O. Determine the percent composition of oxygen from the following percent composition by mass: 19.8% C, 2.50% H, 11.6 % N. Report your answer to one decimal place. *
Using the percent composition data given above, determine the empirical formula of PAN. *
The molar mass of PAN is approximately 120 g/mol. What is the molecular formula of PAN? *
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