Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 2 Atoms, Molecules, and Ions - Study Questions: 145

Answer

$154\ g/mol$ Carbon

Work Step by Step

Molar mass: $385\ g\div2.50\ mol=154\ g/mol$ Identity of E: $154=x+35.45\times4$ $x=12.20\ g/mol$ This atomic weight is closest to carbon's.
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