4. The combustion of butane produces heat according to the equation 2CH/9) + 1304g) → 8C049) + 10HO(1) AH = -5,314 kJ/mol What is the heat of combustion per gram of butane? A-32.5 kJ/g B. - 45.7 kg C.-91.5 kJ/g D.-2656 kJ/g AH = -198 kJ/mol, 5. Given the thermochemical equation: 250:9 +0:19 +25043) how much heat is evolved when 600 g of So, is burned? A.-5.46 x 10° B.-927 KJ C. 1.85 * 10 kJ D.59400 KJ 6. 10.1 g Cao is dropped into a coffee cup calorimeter containing 157 g H.O at 18.0°C. If the following reaction occurs, then what temperature will the water reach, assuming that the cup is a perfect insulator and that the cup absorbs only a negligible amount of heat? [specific heat of water = 4.18 J/g.c] AHCO -64.8 kJ/mol CaO(s) + H2O1) + Ca(OH)-(8) B. 35.8°C C.311°C A. 18.02°C D. 42.2°C 7. Calculate the amount of work done, in joules, when 25 mole of H-O vaporizes at 1.0 atm and 25°C. Assume the volume of liquid H-O is negligible compared to that of vapor. [I L-atm=101.3 J] A. 6190 kJ B.6.19 kJ C.61.1 D. 5.66 kJ 8. At 25°C, the following heats of reaction are known: 2CIF(g) + O2(g) → CI:O(g) + F,0 AH... = 167.4 kJ mol 2C1F3(g) + 20:(g) → CI:O(g) + 3FO(g) AH - 341.4 kJ/mol 2F2(g) + O2(g) → 2F:O(g) AH..=-43.4 kJ/mol At the same temperature, use Hess's law to calculate AH.. for the reaction: CIF(g) +Fxg) - CIF (g) A.-217.5 kJ/mol B-130.2 kJ/mol C. 217.5 kJ/mol D.-108.7 kJ/mol