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D Question 14 Given the tabulated bond enthalpies, estimate the enthalpy of reaction (AH) for the following reaction: CH₂(g) + Cl₂(g) →→→ CH₂Cl₂(g) + H₂(g) Bond C-H C-C C-C CI-CI C-CI H-H +24 kJ O +2160 kJ -24 kJ Enthalpy (kJ mol¹) 413 348 614 242 328 0-170 kJ 436 AHrxn-?
Question 16 Consider the graph shown below, then select all of the statements that are TRUE. Relative Number of Particles 500 B Oill only Oll only O I, II, III, IV COLII, IV 1000 1500 Molecular Speed 2000 2500 1. At a given temperature, curve A represents the gas particles with the lowest molecular mass. II. For a given gas sample, curve D represents the highest temperature. III. At a given temperature, curve D represents gas particles with the highest molar mass. IV. At a given temperature, the gas particles represented by curve B are slightly heavier then those represented by curve C.
Question 17 If the pressure on a gas is increased, the O amount temperature will decrease, because they are indirectly related. O None of these; all relationships between gas variables are directly related to each other O volume
Question 18 One way to increase the pressure exerted by a gas is to O decrease the temperature O lower the average kinetic energy of the particles O increase the number of gas particles present O increase the volume