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: 114

Answer

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Work Step by Step

From the conservation of energy principle: $10\ g\times 0.129\ J/g.K\times (T-100)+$ $10\ g\times 0.385\ J/g.K\times (T-0)+$ $150\ g\times 4.184\ J/g.K\times (T-20)=0$ $1.29(T-100)+3.85(T-0)+627.6(T-20)=0$ $632.74\ T=12681$ $T=20.04^{\circ}C$
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