You may want to reference (Pages 167 - 172) Section 5.2 while completing this problem.
Indicate which of the following is independent of the path by which a change occurs.
(a) the change in potential energy when a book is transferred from table to shelf
(b) the heat evolved when a cube of sugar is oxidized to CO2(g) and H2O(g)
(c) the work accomplished in burning a gallon of gasoline.