General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal
ISBN 10: 0132064529
ISBN 13: 978-0-13206-452-1

Chapter 3 - Chemical Compounds - Exercises - Percent Composition of Compounds - Page 104: 21

Answer

The formula for isooctane is given as C(CH3)3CH2CH(CH3)2

Work Step by Step

1. Calculate the molecular mass of the given molecule isooctane. 2. Find the mass of hydrogen. 3. Using the formula for mass percent, Mass % of H= (mass of H)/(mass of isooctane) x 100 and substituting the values, the mass percent of H atom is calculated. 4. The mass percent of H in the isooctane is 15.8 % approx.
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