The molar mass of nicotine is 162.1 g/mol. It contains 74.0 % carbon, 8.7 % hydrogen, and 17.3 % nitrogen. Determine nicotine’s empirical formula and molecular formula. Phenyl magnesium bromide is used as a Grignard reagent in organic synthesis. Determine its empirical and molecular formula if its molar mass is 181.313 g/mol and it contains 39.7458 % C, 2.77956 % H, 13.4050 % Mg, and 44.0697 % Br.

Introductory Chemistry: A Foundation
9th Edition
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Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter8: Chemical Composition
Section: Chapter Questions
Problem 96AP: A compound was analyzed and found to contain the following percentages of elements by mass: carbon,...
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1mol Na
36.5 g Na
- 1.59 mol Na +0.79 mol →2 Na
23 g Na
1 molS
|= 0.79 mol S+ 0.79 mol → 1S
32 g S
25.4 g S
NazSO3
1 mol O
= 2.38 molO + 0.79 mol → 30
16 go
38.1gO
DO THE GIVEN QUESTIONS LIKE
THE ONE ABOVE
The molar mass of nicotine is 162.1 g/mol. It contains 74.0 % carbon, 8.7 %
hydrogen, and 17.3 % nitrogen. Determine nicotine’s empirical formula and
molecular formula.
Phenyl magnesium bromide is used as a Grignard reagent in organic synthesis.
Determine its empirical and molecular formula if its molar mass is 181.313 g/mol
and it contains 39.7458 % C, 2.77956 % H, 13.4050 % Mg, and 44.0697 % Br.
Transcribed Image Text:1mol Na 36.5 g Na - 1.59 mol Na +0.79 mol →2 Na 23 g Na 1 molS |= 0.79 mol S+ 0.79 mol → 1S 32 g S 25.4 g S NazSO3 1 mol O = 2.38 molO + 0.79 mol → 30 16 go 38.1gO DO THE GIVEN QUESTIONS LIKE THE ONE ABOVE The molar mass of nicotine is 162.1 g/mol. It contains 74.0 % carbon, 8.7 % hydrogen, and 17.3 % nitrogen. Determine nicotine’s empirical formula and molecular formula. Phenyl magnesium bromide is used as a Grignard reagent in organic synthesis. Determine its empirical and molecular formula if its molar mass is 181.313 g/mol and it contains 39.7458 % C, 2.77956 % H, 13.4050 % Mg, and 44.0697 % Br.
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