Write the cell notation for the voltaic cell that incorporates each of the following redox reactions. (Type your answer using the format [NH4] for NH4 , [Mg]2 for Mg2 , and CO2 for CO2.) (a) Al(s) Cr3 (aq) Al3 (aq) Cr(s) (s) | (aq) || (aq) | (s) (b) Cu2 (aq) SO2(g) 2 H2O(l) Cu(s) SO42-(aq) 4 H (aq) Pt | (g) | (aq), H (aq) || (aq) | (s)

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?