Answer
42.2 g
Work Step by Step
n=1.24 mol (given)
M, molar mass= 2$\times$1.008g+2$\times$15.999g = 34.014 g
Using relation m= n$\times$M
m $\approx$ 42.2 g
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 - The Mole Concept - Page 75: 33
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