2 1/1 point For the reaction below, select all the correct statements: CH3OH(aq) + Cr2O72(aq) →CH2O(aq) +Cr3+(aq) The oxidation number of C in CH3OH is -2 Cr is oxidized in the reaction The oxidizing agent is Cr2O72- The reducing agent is CH2O

An aqueous solution of nickel acetate is electrolyzed for 3 hours with a 1.7 ampere current. What mass (grams) of nickel is produced? Atomic Wt. of Ni = 58.69 g/mol Enter your answer below ( two decimal places )

A solution containing 0.402 49 g of CoCl2 ? xH2O (a solid with an unknown number of waters of hydration) was exhaustively electrolyzed to deposit 0.099 37 g of metallic cobalt on a platinum cathode by the reaction Co21 1 2e2¡Co1s2. Calculate the number of moles of water per mole of cobalt in thereagent. A good approach is to find moles of Co, moles of CoCl2, mass of CoCl2, and, by difference, mass of H2O in the sample.

In electrochemistry, specific conductance is defined as (1000/N)* k, where N is the normality of the salt solution and k is the specific conductance. Current is carried by both anions and cations to a different degree. Thus, the equivalence of a salt is the sum of the ionic conductances of the cation and anion. If the ionic conductance of Na+  is 50.1 and that of Cl- is 76.6. What is the estimated concentration of NaCl in mg/L. The specific conductance of NaCl is 125x106.   A) 49      B) 58         C) 29           D) 38   Note: This is not a graded question. This question is from my reviewer.