The Ka for acetic acid, HC2H3O2, is 1.8 × 10-5. A buffer made from 1.0 M HC2H3O2 and 0.10 M C2H3O2- has a pH of .

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.