None A 100. g sample of a carcinogenic organic solvent is composed of 92.30% carbon and 7.69%hydrogen. Its approximate molecular mass was found to be 78 u.How many moles of carbon are in this sample?Note the significant digits.

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Answered: A 100. g sample of a carcinogenic…

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter3: Matter-properties And Changes

Section: Chapter Questions

Problem 72A

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A 100. g sample of a carcinogenic organic solvent is composed of 92.30% carbon and 7.69% hydrogen. Its approximate molecular mass was found to be 78 u. How many moles of carbon are in this sample? Note the significant digits.