An oxygen (0₂) molecule is adsorbed on a patch of surface (see sketch at right). This patch is known to contain 121 adsorption sites. The (0₂) molecule has enough energy to move from site to site, so it could be on any one of them. 10 Suppose additional surface becomes exposed, so that 196 adsorption sites are now available for the molecule. Calculate the change in entropy. Round your answer to 3 significant digits, and be sure it has the correct unit symbol. Co ロ･ロ H pip 10 8 11 8 -12 -13 One way an O, molecule could be adsorbed on a patch of surface with 16 stes

Find DSsys and DSsurr if 3.000 mole of argon is expanded reversibly and isothermally from a volume of 500.0 L to a volume of 2500. L at 298.15 K.

Table 2 Isotopic masses Mass (amu) Table 1 Standard free energy of formation at 600 K Isotope Compound AG? (kJ/mol) 140 Eu 139.9281 -25.2 CH48) CO«) H2O(g) 141 Eu 140 Gd 141Gd 140.9249 -56.9 139.9337 -215.1 140.9321 142 Gd 140Sm 141Sm 141.9281 139.9190 140.9185 142Sm 141.9152 Identify the following reaction as acid-base, Lewis acid-base, redox or none of the above. CH4 + 2 O2 → CO2 + 2 H2O

A chlorine (CI) and bromine (Br) atom are adsorbed on a small patch of surface (see sketch at right). This patch is known to contain 36 possible adsorption sites. The Cl and bromine (Br) atoms have enough energy to move from site to site, so they could be on any two of them. Suppose the Br atom desorbs from the surface and drifts away. Calculate the change in entropy. One way a Cl and Br atom might be adsorbed on a Round your answer to 2 significant digits, and be sure it has the correct unit symbol. surface with 16 sites. Ox10 ?

12:27 12-2 Analyzing Data... NAME Energy (kJ) NAME 1000 Many chemical reactions involve a change in energy. When the energy of the reactants is greater than the energy of the products, the reaction gives off heat and is exothermic. When the energy of the products is greater than that of the reactants, the reaction must absorb energy from the surroundings to occur and is endothermic. If the intermediate stage (the activated complex) is of a higher energy, then the reaction can only take place if the reactants are given an initial energy input (the activation energy). The graph shows energy diagrams that indicate how the energy changes as three reactions occur. Energy Changes for Three Reactions 800 600 Dashboard 400 200 DATE 0 ANALYZING DATA Interpret Energy Diagrams CLASS Direction of reaction 000 000 Calendar DATE .5GE 14 A D Copyright © Savvas Learning Company LLC. All Rights Reserved. Savvas is not responsible for any modifications made by end users to the content posted in its…