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 217g: 92


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Work Step by Step

a) Converting units: $3766\ kJ\div 4.184\ kJ/Cal=900.0\ Cal$ b) Proportionally: $900\ Cal/100.0\ g=1500\ Cal/(x\times 14.0\ g/Tbsp)$ $x=11.9$ 12 tablespoons. c) In one tablespoon: $900\ Cal/100.0\ g=x/14.0\ g$ $x=126\ Cal$ Water: $126\ Cal\times4184\ J=m\times4.184\ J/g.K\times (100.0-25.0)$ $m=1680\ g$
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