Answered: While cleaning out an old shelf in the…

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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While cleaning out an old shelf in the lab, a chemist discovered a bottle labeled "HIGHLY TOXIC". After performing mass spectrometric analysis, it was discovered that the unknown compound has a molar mass of 317.8 amu. Subsequent elemental analysis indicated a percent composition of 75.43% Br, 13.22% N, and 11.34% C.

Assuming you have a 100 g sample, how many grams of each element are there, how many moles of each element are there, what is the empirical formula, and what is the molecular formula?

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Question 5 options:

	g N : (2) 13.2
	mol C
	g C : (3) 11.3
	Empirical formula
	mol Br
	g Br : (1) 75.4
	Molecular formula
	mol N

1.	75.4
2.	13.2
3.	11.3
4.	0.944
5.	0.809
6.	0.142
7.	100
8.	1.10
9.	0.165
10.	6.28
11.	5.38
12.	CNBr
13.	C₂N₂Br
14.	C₃N₃Br₃
15.	C₄N₄Br₃

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