U3_M1_HW-pesmod - Chemistry XXI Unit 3 Module 1 Weekly...

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Chemistry XXI Unit 3 Module 1 Weekly Homework Combining the results of IR and MS can provide direct structural information about the molecules that make up substances. Your task is to use experimental data to determine the molecular structures of the following 4 unknowns. a) Unknown A is a pleasant smelling liquid with a boiling point of 101ºC. Elemental analysis results show that it has an empirical formual of C 3 H 6 O. Use this and the IR-MS data to determine the structure of this compound.
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b) Unknown B is an oily liquid with boiling point of 101ºC and a melting point of -13 ºC. Elemental analysis results show that it has an empirical formula of C 7 H 5 N. Use this and the IR-MS data to determine the structure of this compound.
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c) Unknown C is a colorless solid with a melting point of 103 ºC. Elemental analysis results show that it has an empirical formula of C 5 H 11 NO. Use this and the IR-MS data to determine the structure of this compound.
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d) Unknown D is a colorless gas that condenses at -26 ºC. Elemental analysis results show that it has an empirical formula of C 3 F 6 O. Use this and the IR-MS data to determine the structure of this compound.
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2. Imagine that we were able to communicate with aliens from a parallel universe. Among the
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U3_M1_HW-pesmod - Chemistry XXI Unit 3 Module 1 Weekly...

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