Without referring to tables, predict which of the followinghas the higher enthalpy in each case: (a) 1 mol CO21s2 or1 mol CO21g2 at the same temperature, (b) 2 mol of hydrogenatoms or 1 mol of H2, (c) 1 mol H21g2 and 0.5 mol O21g2 at25 °C or 1 mol H2O1g2 at 25 °C, (d) 1 mol N21g2 at 100 °C or1 mol N21g2 at 300 °C.

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Without referring to tables, predict which of the following
has the higher enthalpy in each case: (a) 1 mol CO21s2 or
1 mol CO21g2 at the same temperature, (b) 2 mol of hydrogen
atoms or 1 mol of H2, (c) 1 mol H21g2 and 0.5 mol O21g2 at
25 °C or 1 mol H2O1g2 at 25 °C, (d) 1 mol N21g2 at 100 °C or
1 mol N21g2 at 300 °C.

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