a. Calculate the molar masses of these two compounds(CH2FCF3 and CHClFCF3). b. What is the percent composition of CH2FCF3? c. What is the percentage of Chlorine present in CHClFCF3.

Chemistry & Chemical Reactivity
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions
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1. The Freons are a class of compounds containing carbon, chlorine, and fluorine. While they have many valuable uses, they have been shown to be responsible for depletion of the ozone in the upper atmosphere. In 1991, two replacement compounds for Freons went into production: HFC-134a (CH2FCF3) and HCFC-124 (CHClFCF3). a. Calculate the molar masses of these two compounds(CH2FCF3 and CHClFCF3). b. What is the percent composition of CH2FCF3? c. What is the percentage of Chlorine present in CHClFCF3.
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