Enthalpy (Sections)
Without referring to tables, predict which of the following has the higher enthalpy in each case:
(a) 1 mol CO2(s) or 1 mol CO2(g) at the same temperature, (b) 2 mol of hydrogen atoms or 1 mol of H2, (c) 1 mol H2(g) and 0.5 mol O2(g) at 25 °C or 1 mol H2O(g) at 25 °C, (d) 1 mol N2(g) at 100 °C or 1 mol N2(g) at 300 °C.
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