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A substance, which is composed of 77.87% C, 10.37% O, and the remainder hydrogen.fout of 100%) 1. What is the empirical formula for this substance? 2. Its molecular mass is 154 g/mol. What is the molecular formula of the substance?

A substance, which is composed of 77.87% C, 10.37% O, and the remainder hydrogen.fout of 100%) 1. What is the empirical formula for this substance? 2. Its molecular mass is 154 g/mol. What is the molecular formula of the substance?

Chemistry & Chemical Reactivity
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
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Problem 133GQ: Empirical and molecular formulas. (a) Fluorocarbonyl hypofluorite is composed of 14.6% C, 30.0% O,...
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A substance, which is composed of 77.87% C, 10.37% O, and the remainder hydrogen.fout of 100%) 1. What is the empirical formula for this substance? 2. Its molecular mass is 154 g/mol. What is the molecular formula of the substance?
Transcribed Image Text:A substance, which is composed of 77.87% C, 10.37% O, and the remainder hydrogen.fout of 100%) 1. What is the empirical formula for this substance? 2. Its molecular mass is 154 g/mol. What is the molecular formula of the substance?
Expert Solution
Step 1

Given : The compound consist of only C, H and O.

Mass percent of C = 77.87 %

Mass percent of O = 10.37 %

Since the sum of mass percent of all the 3 elements should be 100 %

=> mass percent of H = 100 - Mass percent of C - Mass percent of O

=> mass percent of H = 100 - 77.87 - 10.37 = 11.76 % 

1) Assuming 100 g of the compound and the empirical formula of the compound as CaHbOc.

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