QUESTION 25 Determine the heat of reaction for the combustion of ammonia, 4 NH3(g) + 7 O2(g) → 4 NO2(g) + 6 H₂O() 1 usin

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Question 25 Determine The Heat Of Reaction For The Combustion Of Ammonia 4 Nh3 G 7 O2 G 4 No2 G 6 H O 1 Usin 1 (34.31 KiB) Viewed 41 times

QUESTION 25 Determine the heat of reaction for the combustion of ammonia, 4 NH3(g) + 7 O2(g) → 4 NO2(g) + 6 H₂O() 1 using molar enthalpies of formation. molecule NH3(9) NO2(g) H₂O() a.-1663.6 kJ b. +30.24 kJ Oc.-1398.8 kJ d.-206.9 kJ O e.-298.6 kJ AHf (kJ/mol) -45.9 +33.1 -285.8 QUESTION 26 When 1.75 g of CaCl2 dissolves in 125 g of water in a coffee-cup calorimeter, the temperature increases by 2.44 °C. What is the heat change per mole of CaCl2 dissolved in water? Assume that all the heat is absorbed by the water (Csp=4.184 J/g. °C). a.-728 J Ob.-11.3 kJ Oc.-1.13 kJ O d.-80.9 kJ e-82.1 kJ