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Firefox File Edit View History Bookmarks Yahoo! Tools Window Help O S 4) 42% D Fri Mar 20 1 00 PM a E WWN7496: Homework 9- d... x ii 3 smartwork wwnorton.co 397563 m/sw/mod/smartwork/view.php?id a Search Search YAHOO! Yahoo Search te, Print Calculator Periodic Table book Question 18 of 18 (1 point) we k Urine odor gets worse with time because urine contains the metabolic product urea [CO(NH2)2, a compound that is slowly converted to a onia and carbon dioxide mm mol CO NHL aq .015 This reaction is much too slow for the enthalpy change to be measured directly using a temperature change. Instead, the enthalpy change for the reaction may be calculated from the following data g th Compound AH (kJ/mol) nC Urea (aq) -319.2 -412.9 CO2(aq) -285.9 H20() nC NH3(aq) 80.8 Number kJ mol l) 7 Check Answer View Solution D Hin Progress 9 10 11 12 13 14 15 16 17 18 Record my Grade er day

Explanation / Answer

Enthalpy changes =[ (2 X -80.8) + (-412.9) - (-285.9) - (-319.2)] kJ/mol

= 30.6 kJ/mol

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