1. Calculate the weight % of each component in an unknown sample of volatiles using Area Normalization. Given the following information use ethanol as the internal standard. Standard Component Unknown sample Weight used Raw Peak Area Component Raw Peak Area (mg) Ethanol 498.3 5104 Ethanol 3495 Hexane 756.4 9285 Hexane 3267 Benzene 412.7 4374 Benzene 2894 Ethyl acetate 628.9 7239 Ethyl acetate 5402 2. Calculate the absolute error between the normalized area percentages and the calculated weight percentages of the unknown components.

1. Calculate the weight % of each component in an unknown sample of volatiles using Area Normalization. Given the following information use ethanol as the internal standard. Standard Component Unknown sample Weight used Raw Peak Area Component Raw Peak Area (mg) Ethanol 498.3 5104 Ethanol 3495 Hexane 756.4 9285 Hexane 3267 Benzene 412.7 4374 Benzene 2894 Ethyl acetate 628.9 7239 Ethyl acetate 5402 2. Calculate the absolute error between the normalized area percentages and the calculated weight percentages of the unknown components.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter14: Chromatography

Section: Chapter Questions

Problem 9P

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Standard	Unknown sample
Component	Weight used (mg)	Raw Peak Area	Component	Raw Peak Area
Ethanol	498.3	5104	Ethanol	3495
Hexane	756.4	9285	Hexane	3267
Benzene	412.7	4374	Benzene	2894
Ethyl acetate	628.9	7239	Ethyl acetate	5402