Determine the empirical and molecular formulas of each ofthe following substances:(a) Styrene, a compound used to make Styrofoam® cups andinsulation, contains 92.3% C and 7.7% H by mass andhas a molar mass of 104 g>mol.(b) Caffeine, a stimulant found in coffee, contains 49.5% C,5.15% H, 28.9% N, and 16.5% O by mass and has a molarmass of 195 g/mol. (c) Monosodium glutamate (MSG), a flavor enhancer incertain foods, contains 35.51% C, 4.77% H, 37.85% O,8.29% N, and 13.60% Na, and has a molar mass of169 g/mol.
Determine the empirical and molecular formulas of each ofthe following substances:(a) Styrene, a compound used to make Styrofoam® cups andinsulation, contains 92.3% C and 7.7% H by mass andhas a molar mass of 104 g>mol.(b) Caffeine, a stimulant found in coffee, contains 49.5% C,5.15% H, 28.9% N, and 16.5% O by mass and has a molarmass of 195 g/mol. (c) Monosodium glutamate (MSG), a flavor enhancer incertain foods, contains 35.51% C, 4.77% H, 37.85% O,8.29% N, and 13.60% Na, and has a molar mass of169 g/mol.
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter2: Atoms Molecules And Ions
Section2.8: Instrumental Analysis: Determining Compound Formulas
Problem 2.2ACP: Salvarsan was long thought to be a single substance. Recently, however, a mass spectrometry study of...
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Question
Determine the empirical and molecular formulas of each of
the following substances:
(a) Styrene, a compound used to make Styrofoam® cups and
insulation, contains 92.3% C and 7.7% H by mass and
has a molar mass of 104 g>mol.
(b) Caffeine, a stimulant found in coffee, contains 49.5% C,
5.15% H, 28.9% N, and 16.5% O by mass and has a molar
mass of 195 g/mol.
(c) Monosodium glutamate (MSG), a flavor enhancer in
certain foods, contains 35.51% C, 4.77% H, 37.85% O,
8.29% N, and 13.60% Na, and has a molar mass of
169 g/mol.
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