Be sure to answer all parts. Predict whether the standard entropy change for the following reactions at 25°C will be positive, negative, or too close to call. (a) 2 CO2(g) → 2 CO(g) + O2 (g) The standard entropy change is positive. The standard entropy change is negative. The standard entropy change is too close to call. (b) 3 O2(g) → 2 O3(g) The standard entropy change is positive. The standard entropy change is negative. The standard entropy change is too close to call. (c) 2 NaHCO3(s) → Na2CO3(s) + H2O(l) + CO2(g) The standard entropy change is positive. The standard entropy change is negative. The standard entropy change is too close to call.

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

Draw the lewis dot structure for each of the following polyatomic ions

How do cfcs cause ozone depletion? how do cfcs cause ozone depletion? ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.