Police officers confiscate a packet of white powder that they believe contains heroin. Purification by a forensic chemist yieldsa 39.69 mg sample for airproof combustion analysis. The sample gives 99.96 mg of CO2 and 21.34 mg of H20. A second sample isanalyzed for nitrogen content, which is 3.8%.What is the empirical formula of the compound? List the elements in standard order for carbon compounds: C followed by Hfollowed by other elements in increasing atomic number.Formula:2 EditThe formula for heroin is C21H23NO5. Select the best response that characterizes these results:the white powder does not contain heroin because the formulas do not match.the white powder could contain heroin because the formulas match closely enough.no conclusions can be drawn because there is insufficient information.the white powder must contain heroin because the formulas match.O O O 0

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empirical formula of the compound? List the elements in standard order for carbon compounds:

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter3: Bonding: General Concepts

Section: Chapter Questions

Problem 140CWP

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Question

Police officers confiscate a packet of white powder that they believe contains heroin. Purification by a forensic chemist yields
a 39.69 mg sample for airproof combustion analysis. The sample gives 99.96 mg of CO2 and 21.34 mg of H20. A second sample is
analyzed for nitrogen content, which is 3.8%.
What is the empirical formula of the compound? List the elements in standard order for carbon compounds: C followed by H
followed by other elements in increasing atomic number.
Formula:
2 Edit
The formula for heroin is C21H23NO5. Select the best response that characterizes these results:
the white powder does not contain heroin because the formulas do not match.
the white powder could contain heroin because the formulas match closely enough.
no conclusions can be drawn because there is insufficient information.
the white powder must contain heroin because the formulas match.
O O O 0

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