Question

8) HY 8) Consider a reaction that has a negative AH and a positive AS. Which of the following statements is true? A) This reaction will be spontaneous only at high temperatures. B) This reaction will be spontaneous at all temperatures C) This reaction will be nonspontaneous at all temperatures. D) This reaction will be nonspontaneous only at high temperatures. E) It is not possible to determine without more information 9) What is the volume of 5.60 g of O2 at 7.78 atm and 415K? A) 24.5 L B ) 0.766 L C ) 1.53 L D) 25.0 L E) 565 L 10) Which of the following statements is true? A) ASuniverse is always greater than zero for a nonspontaneous process. B) Exothermic processes decrease the entropy of the surroundings. C) Entropy is an extensive property. D) Entropy is temperature independent. E) None of the above are true. 11) Determine AG rxn using the following information H2(g) + CO(g) CH2O(g) AH = +1.9 kJ; AS-109.6J/K A) +34.6kJ B ) -30.8 kJ () +17.3 kJ D) 57.7 kJ E) -41.5 kJ 12) 12) The volume of a gas is inversely proportional to the pressure of a gas is known as A) Avogadro's Law. B) Ideal Gas Law C) Charles's Law. D) Boyle's Law. E) Dalton's Law. 13) 13) To what temperature must a balloon, initially at 25°C and 2.00 L, be heated in order to have a volume of 6.00 L? A) 655 K B) 403 K C) 75 K D) 894 K E) 993 K 14) Which statement is true about kinetic molecular theory? A) A single particle does not move in a straight line. B) The average kinetic energy of a particle is not proportional to the temperature. C) The size of the particle is large compared to the volume of the particle. D) The collisions of particles with one another is completely elastic. 15) 15) A 0.465 g sample of an unknown compound occupies 245 mL at 298 K and 1.22 atm. What is the molar mass of the unknown compound? A) 81.8 g/mol B) 33.9 g/mol C) 12.2 g/mol D ) 26.3 g/mol E) 38.0 g/mol

Answer 1

Date Extropy is extensive prepexhydtsoy is emprabure depemdant Extropy increases in exo termie reathon ASwiese Spontamcous precess Ser are correct AH 1a103 J AST 109-6 JIK Ta 298K 442 1900-29xl9) 442307b0-8 J OY 30-8 KJ ophon isotreut Boyels law 12 PvanRT Tonstant PN K Patn Plophon is Tre ct V

Date 13 PN RT P onstank T 298K 16 2 Ti 218 Te 6x297 2 994 K a 844 K aphon is correct Sire of patide W op Hon Nolame of part de 15 Brplying 1.2270 295 O.0122 AT 00821 X198 he o.o12n O0122 mass Molar mass

Melarmass) O465 38 11 O0122 Henel 38 Molar mass Lopared Elapton is