Electrochemistry Galvanic cells

Two half reactions that join electrically measuring voltage relationship between temp and cell voltage calculating thermodynamic functions.

Redox and Electrochemistry

1.) Give the oxidation number of each element in the following: KIF4 2.) Is the following reaction a redox reaction? If yes, then what is the oxidizing agent and what is the reducing agent. 3NO3(g)+H20(l)-----2HNO3(aq)+NO(g) 3.) Write the balanced net ionic equation for the following reaction. Tell what substance is oxidized and which is reduced. A solution of nickel (II) sulfate is electrolyzed 4.) Write the balanced net ionic equation for the following reaction. Tell what substance is oxidized and which is reduced. Solid zinc sulfide is burned in excess oxygen

VELOCITY

FOR AN OBJECT WITH A VELOCITY OF 100 m/sec, WHAT MASS WOULD IT NEED TO HAVE AN ASSOCIATED WAVE OF 550 nm?

Hydrogen Atom

Which of the following energy levels is not possible in the Bohr hydrogen atom? A. En = -2.179 x 10 to the power of -18 J B. En = -5.445 x 10 to the power of -19 J C. En = -2.421 x 10 to the power of -19 J D. En = -2.183 x 10 to the power of -19 J E. En = -1.362 x 10 to the power of -19 J

Reaction and reaction kinetics when calcium carbonate is added to solution of water and acetic acid?

Help!! See attached problem statement. An unknown (but assumed relatively small) amount of calcium carbonate is added to a 1000L solution of water and acetic acid which exhibits a pH of 4.0.The CaCO3 is used to raise the pH to 5.0 but more specifically is to create the chemical reaction such that when the solution is heated, a portion of the acetic acid in solution is volatilized to calcium ethanoate rather than say acetaladehyde or formaldehyde. If we assumed that the amount of calcium carbonate needed was approx. 100 grams, the the problem asks us to derive how much of the acetic acid (when heated) will volatilize to calcium ethanoate ----- and it asks us to generally use kinetic pri... click for more