For a particular process q = -28 kJ and w = +48 kJ. What conclusion(s) can be drawn for this process? (i) ΔE = +20 kJ (ii) ΔSsurroundings < 0 (iii) the reaction is endothermic (iv) the volume of the system increases
Select one:
a. (iii) and (iv) only
b. (i) and (ii) only
c. (ii), (iii), and (iv) only
d. (i), (ii), and (iv) only
e. (i) only
For a particular process q = -28 kJ and w = +48 kJ. What conclusion(s) can...
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.
1. If q 60 kJ and w = 96 kJ for a certain process, that process (3) a. requires a catalyst. b. is endothermic. c. occurs slowly. d. is exothermic. e. cannot occur. 2. What is the change in internal energy of the system (AU) if 71 kJ of heat energy is absorbed by the system and 12 kJ of work is done on the system for a certain process? (4) a. 83 kJ b. 59 kJ c. 71 kJ...
d listing r. (Individ For a particular first-order reaction, it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value, what is the value for rate constant (in S-1) for the reaction? A) 2.0-104 s-1 B)9.6 x 10-4 s-1 C) 1.2 × 10-2 s-1 D)5.8 102s-1 12. In the first order reaction A → products, [A1-0.400 M initially and 0250 M after 15.0 mun, what willl after 175 min? e A) 1.67-10-3 M...
Consider the equilibrium: Fe3O4(s) + CO(g) ←à 3 FeO(s) + CO2(g) ΔH= +18 kJ. Which of the following stresses when applied to an equilibrium mixture of reactants and products, will cause [CO] to increase? I. Decrease in pressure due to a increase in volume. II. Doubling the [CO2]. III. Addition of a catalyst. IV. Halving the mass of solid Fe3O4. V. Increase in the temperature. A.I only B. I, II and V C. I, III and IV D. II and...
i need help with #s 30-32 and can you check 28 and 29
28. Which of the following is an isomer of CHOCH,? (a) CH.CH (b) CH,COOH (C) CH,CH,OH (4) CH,CH,CH, c) CH-CH,O CHỊCH, at atm? an a 29. Which of the following has the greatest solubility in C. H (a) SO (b) NaCl H.O. (d) CCIO JOT NH H - c-c- c-c-c- HHH 30. High solubility of an ionic solid in water is favored by which of the following...
Sample Examination II t a system at equlibriurm aecording to the equation 159 s added to such an equilibrium system at constant volume and temperatare, the total pressure ses and the number of NHs molecules present increases (B) decreases and the number of NHa molecules present Increases remains the same and the rumber of Nils molecules present increases remains the same and the number of NHs molecules present decreases E) increases and the number of NiHs molecules present remains the...
5. Consider the reaction, 2SO2 (g) + O2 (g) 2SO3 (g), at T-525°C with ΔΗ -197 kJ. This reaction has an equilibrium constant K = 781 at this temperature, which condition(s) listed below will cause a shift in the reaction equilibrium to RIGHT? I. If Psos -0.400 atm, Pso2-0.050 atm, and P02 0.050 atm II. If at equilibrium, Psos is suddenly decreased by removing SO III. If at equilibrium, the volume of the vessel is decreased IV. If at equilibrium,...
48.Tho most space efficient arrangement of spheres is found in which type(s) of atom arrangement? I. Hexagonal close-packed II. Cubic closed-packed III. Simple cubic IV. Body-centered cubic A. I only B. II only C. I and II D.IV only E. I I and IV
17. Draw the major organic product(s) generated in the reaction below. Pay particular attention to regio- and stereochemical detail. CH,COH H3CHC CH2CH3 18. Which of the following steps would successfully complete the following reaction? OCH3 HO Стосны A. I only B. II & III GI & IV D.), II, & IV 1 1 ) Brz. 2) NaOCH II. 1) Hg(OAC). 2) NaBH4, 3) NaOCHE III. 1) B2, CH5OH, 2) NaH IV. 1) mCPBA, H. 2) Na°3) CHE! 19. Draw the...
If 3.70 moles of a liquid vaporizes at 69.0 °C and 2.57 atm; what is the value of work? 0-10.5 kJ O 104 kJ 0-104 kJ 0 -20.9 kJ 0 10.5 kJ Container A Container B Contents: Ar(g) Contents: 12(g) Mass: 12.0 g Mass: 10.2 g Volume: 3.00 L Volume: 3.00 L Temperature: 25 °C Temperature: 25 °C Pressure: P1 Pressure: P2 Use this information to answer the following question: The stopcock is opened and the gases are allowed to...