A Chemistry solutions of a carboxylic acid and an alcohol. He then prepared the ester as per laboratory instrü identified the odour of the ester as a pear flavour. A carboxylic acid has empirical formula CH,O, and its structure is determined by using various spectroscopic techniques. (a) The mass spectrum for this carboxylic acid molecule is given below. 100- 80- 60- relative intensity 40- 20- 10 15 20 25 30 35 40 45 50 55 60 65 70 75 mass/charge (m/e) (1) State the relative molecular mass of this molecule; hence determine its molecular formula. (ii) Draw the structural formula of the carboxylic acid and give its systematic name.

A Chemistry solutions of a carboxylic acid and an alcohol. He then prepared the ester as per laboratory instrü identified the odour of the ester as a pear flavour. A carboxylic acid has empirical formula CH,O, and its structure is determined by using various spectroscopic techniques. (a) The mass spectrum for this carboxylic acid molecule is given below. 100- 80- 60- relative intensity 40- 20- 10 15 20 25 30 35 40 45 50 55 60 65 70 75 mass/charge (m/e) (1) State the relative molecular mass of this molecule; hence determine its molecular formula. (ii) Draw the structural formula of the carboxylic acid and give its systematic name.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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An unknown compound contains 42.6 oxygen, 32% carbon, 18.7% N and the remainder is hydrogen. Using mass spectroscopy its molar mass was determined to be 75.0g/mol. What is the molecular formula of the compound.
3. Which statement best summarizes the consequences of the procedural error. HINT: Compare the answers to part 1 and part 20, O The determined mass percent of Mg in MgOs high because the mass percent of Mg is lower in MgN, than it is in MgO O The detemmined mass percent of Mg in MgO is low because the mass percent of Mg is higher in MaNa than it is in MgO. O The determined mass percent of Mg in MgO is high because the mass percent of Mg in higher is MasNa than it is in Mgo O The determined mass percent of Mg in MgO is low because the mass perdent of Ma is kwer in MaN than it is in MgO
Zolpidem is a common hypnotic with the chemical formula C₁9H21N3O. Stilnox - the brand name of zolpidem in Vietnam- is the hemitartratre of zolpidem: meaning that the salt contains 1 molecule of tartaric acid for 2 molecules of zolpidem : (C₁9H₂1N30)₂ C₂H₂O6 The molar mass (molecular weight) of zolpidem is 307.39 g/mol while the molecular weight of the hemitartratre salt is 764.87 g/mol. We want to prepare 100mL of a 1mM zolpidem solution. How much zolpidem base should we weigh ? How much should we weigh if we start with the hemitartrate salt? a- b- Select one: a. a- 30.7 mg, b- 38.2 mg b. a-30.7 mg, b- 76.5 mg c. a- 61.5 mg, b- 76.5 mg
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The mass spectrum below corresponds to which of the following compounds? arbitrary units OOT 20 (A) 70 (B) Br 100 110 132 134 160 162 120 130 140 150 160 170 m/z OH to (C) CI (D)
How do I interpret this mass spec graph in order to determine the identity from the list of unknowns below?
Calculate the number of atoms of hydrogen (H) in 470. cm3 of the colorless gas ethene at 0 °C and atmospheric pressure, where its density is 1.25x103 g cm 3. The molecular formula of ethene is C,H4. H atoms Submit Answer Retry Entire Group o more group attempts remaining
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