Chemistry and Chemical Reactivity (9th Edition)

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

Chapter 5 Principles of Chemical Reactivity: Energy and Chemical Reactions - Study Questions - Page 217e: 80

Answer

A

Work Step by Step

From the conservation of energy principle, assuming not all ice melts: $240\ mL\times 1\ g/mL\times 4.184\ J/g.K \times(10.5-0)\ K=m\times 333\ J/g$ $m=31.7\ g\lt 45\ g$ Answer is A. Remaining ice: $45-31.7=13.3\ g$
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