In the correction issued to page 40 of the Science Resource Guide on June 12, an unnecessary change was made to the half reaction given in the 2^nd line from the top of column 2. The only aspect of this half reaction that required a correction was the sign of the E⁰ value. So, the 2^nd line from the top of column 2, page 40, should read:

Fe²⁺ → Fe³⁺ + e^–               E⁰ = – 0.77 V

And, as was noted in the original correction posted on June 12, the two sentences following this equation should thus read: “The combination of the two half reactions (–3.05 V + –0.77 V) gives us a cell voltage of –3.82 V. This reaction will occur naturally only in the reverse direction, or Li + Fe³⁺ → Li⁺ + Fe²⁺ when the cell voltage is +3.82 V.”

In the Science Resource Guide, on page 13, column 1, the 5^th line of the 2^nd complete paragraph should read:

___

In the Science Resource Guide, on page 24, the words “per second” should be deleted from the formula given in the 1^st sentence of column 1 so that it reads simply:

.

___

In the Science Resource Guide, on page 40, the 2^nd line from the top of column 2, should read:
Fe³⁺ → Fe²⁺ + e^–   E⁰ = – 0.77 V.

And, the two sentences following this equation should thus read:
“The combination of the two half reactions (–3.05 V + –0.77 V) gives us a cell voltage of –3.82 V. This reaction will occur naturally only in the reverse direction, or Li + Fe³⁺ → Li⁺ + Fe²⁺ when the cell voltage is +3.82 V.”