Chemistry 10th Edition

by Whitten, Kenneth W.; Davis, Raymond E.; Peck, Larry; Stanley, George G.

Published by Brooks/Cole Publishing Co.

ISBN 10: 1133610668

ISBN 13: 978-1-13361-066-3

Chapter 2 - Chemical Formulas and Composition Stoichiometrhy - Exercises - Percent Purity - Page 77: 87

Answer

(a)The mass of acetic acid=7.185g (b)The mass of acetic acid=7.185pounds (c)The mass of NaCl=1.7g

Work Step by Step

$5\%=\frac{5}{100}=0.05$ (a)The mass of acetic acid=Total mass of vinegar$\times$ Percent of acetic acid=$143.7g\times5.0\%=7.185g$ (b)The mass of acetic acid=Total mass of vinegar$\times$ Percent of acetic acid=$143.7pounds\times5.0\%=7.185pounds$ (c)The mass of NaCl=Total mass of saline$\times$ Percent of sodium chloride=$34g\times5.0\%=1.7g$

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