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3. Consider the following unbalanced reaction and determine the ∆Hº for the reaction using Appendix G in the back of your book. [Report the answer to three sig figs and without unit labels. Use +/- signs to indicate if the value is endo- or exothermic.] ___NO2(g) + ___ H2O(g) --> ___HNO3(g) + ____NO(g)

hydrogen H2(g) 0 0 130.7 H(9) 217.97 203.26 114.7 H(aq) 0 0 o -230.0 -157.2 -10.75 OH-(aq) H30+(aq) -285.8 69.91 H20(1) -285.

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