Chemistry: A Molecular Approach (3rd Edition)

Published by Prentice Hall
ISBN 10: 0321809246
ISBN 13: 978-0-32180-924-7

Chapter 3 - Sections 3.1-3.12 - Exercises - Problems by Topic - Page 133: 93c



Work Step by Step

Calculate the molar mass of the empirical formula by adding the molar masses of its constituent elements together. $5(12.01)+10(1.01)+1(14.0)+2(32.07)= 148.29$ Divide the molar mass given by this number and round to the nearest whole number (it should be really close). $\frac{296.54}{148.29}=2$ Multiply the Empirical formula by this number to get the molecular formula. $2(C_{5}H_{10}NS_{2})=C_{10}H_{20}N_{2}S_{4}$
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