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Question 17 5 pts Calculate AE for a process, given that q = -47 kJ, and...
Calculate AE for a process, given that q = -47 kJ, and w= +88 kJ. we cannot determine 0-135 kJ +41 kJ +135 kJ -41 kJ
5. For a particular process, q=-17 kJ and w = 21 kJ. Which of the following statements is false? a. Heat flows from the system to the surroundings. b. The system does work on the surroundings. c. AE = +4 kJ d. The process is exothermic. e. None of the above is false.
Calculate AE for each of the following. (a) a = -34 k), w = +88 kJ Ok] (b) q = +82 k), W = +40. kJ CkJ (c) 9 = +33 k), w = 0 Ok] (d) In which of these cases do the surroundings do work on the system? (Select all that apply.) case a case b casec O none of the cases
5. 83 kJ of heat are exchanged between the system and surroundings in an endothermic reaction, and the system does 2.0 k) of work on the surroundings. Which of the following statements are true? a. q>0, w <0, AE >O b. q<0, w<O, AE > C. q< 0, w < 0, AE < 0 d. 9>0, w >O, AE > e. The answer cannot be determined from the information provided
15) For a particular process that is carried out at constant pressure. A AE = 140 kJ and AH = 170 kJ. C) AE = 110 kJ and AH = 140 kJ. 140 kJ and w*-30 kl. Therefore, B) AE = 170 kJ and AH = 140 kJ. D) AE - 140 kJ and AH110 kl. 16) How much energy is evolved during the formation of 296 g of Fe, according to the reaction below? Fe2O3(s) + 2 Al(s) →...
Question 17 3 pts Using standard molar enthalpies of formation given in the table below, calculate AH/xnto one decimal place, for the combustion of ammonia: AHrxn° = E nAH (products) - E mAHt"reactants) 4 NH3(g) + 7 O2(g) → 4NO2(g) + 6H2O(1) molecule AHF (kJ/mol-rxn) NH3(g) -45.9 NO2(g) +33.1 H2O(1) -285.8 H2O(9) -241.8 - 1663.6 kJ/mol-rxn +30.24 kJ/mol-rxn -1398.8 kJ/mol-rxn -298.6 kJ/mol-rxn -206.9 kJ/mol-rxn Question 11 3 pts A gas absorbs 45 kJ of heat and does 29 kJ of...
Question 282 points In a process q= 25 and v= -15 kJ. Which of the following statement is true about this procer? AE for this process will be -10 ki Page 2 In this process system is doing work on surrounding In this process system is releasing energy to the surrounding Page 3 this process is exothermic with respect to the system
Question 17 1 pts 17. According to the definition of standard enthalpy of formation, AH, which of the following's AH is zero? O OH(aq) Hg(s) Al(s) NaCl(s) Hez(g) 1 pts D Question 18 18. Given the data in the table below, calculate the AHørxn (kJ) for the reaction 4NH3(g) + 5O2 (g) - 4NO (g) + 6H20 (1)
U Question 30 5 pts If 4.8 g of sulfur react with an excess amount of fluorine according to the equation, what mass of the product is formed when the reaction is complete? 1 mole SF6 - 146.05 g S + 3F2-SF o 228 O 9.0 g 328 O 158 D Question 29 5 pts If 1.85 g MgO is combined with enough 1.00 M HCl to make 100.0 mL of solution in a coffee-cup calorimeter, the temperature of the...
IS LOCAS Question 16 5 pts Given the following data: S(s) + O2(g) → SO3(8) AH=-395.2 kJ 2502(g) + O2(g) - 2503(g) AH = - 198.2 kJ Calculate AH for the reaction: S(s) + O2(g) +SO2(g) -197.0 kJ 0 -593.4 kJ -296.1 kJ -494.3 kJ +296.1 kJ 5 pts Question 17