How to fill in these two blanks?

The formula for the energy conversion efficiency of 5H2O+CO2+6E-=CH3OH+6OH - is not visible.

I suspect that the energy conversion efficiency of device B should be the number of electrons in the circuit corresponding to the generation of reduction products or oxidation products.

The first question: because OH- moves to B level, so B level because of the negative electrode of the battery, A is the positive stage of the battery, the positive stage undergoes a reduction reaction, CO2 is reduced by H2, in CH3OH, H is +1 valence, O is -2 valence, so the valence state of C is 0-4+2=-2, 1molCO2 participates in the reaction to transfer 4-(-2)=6mol electrons, C is reduced to electrons, and then the charge is conserved, 6 negative charges on the left, 0 negative charges on the right, In this way, add 6 oh-trim charges on the right (you can't add 6 h+ on the left, because it is an alkaline solution), the elements are conserved, and the left side lacks 10 h, 5 o, so add 5 water on the left, you can also write the formula b first, and subtract it by the total formula.

The second question, 1 6, molCO2 corresponds to 1mole- (that is, the electrons transferred by the reducing agent, the two are equal), the efficiency of A is 80%, then there is in B, 24 grams of caustic soda is caustic soda, according to the equation 2NaCl + 2H2O = 2NaOH + H2 + Cl2 (conditions and gas symbols are not marked), caustic soda corresponds to hydrogen, so B ( indicates efficiency) =

Pot friend, what about the conditions in front of you.

Special tè bié.

Specific meaning: 1. Not ordinary; Larger than life.

2. Extraordinary. 3. Specially; Specially.

4. Especially. Street Pinyin.

jiē dào]

Interpretation] 1.There is a relatively wide road with houses next to it.

2.Matters related to the residents of the streets.

The words on it are: Special.

The words on it are: Street.

9 16 The area ratio is equal to the square of the similarity ratio The similarity ratio is 3 4 squares is 9 16

Odd friends with several items are added 5, and even items are added to 3 branches

Odd terms: 2 + 5 = 7 7 + 5 = 12

Even terms: 3+3=6, 6+3=12, and so on.

The proportion of finger bones = 27 103 * 14 27 = 14 103, and the number of finger bones = 206 * 14 103 = 28.

There is a sound and a good preparation, and Lu Kai has a beginning and an end.

There is flesh and blood, there is a head and a face.

There are pros and cons There are heads and tails.

There are imitation boards and eyes.

There is everything, there are edges and corners.

There is affection and righteousness, there is a saying, there is a smile.

There is bias and direction, and there is evidence.

Be organized, have a clue.

Well-founded, powerful, powerful.

Multiplication, I can't see it, the nth power of a is equal to the nth power of b, the nth power of a b, the nth power of b, the nth power of c,,, if you understand it, give it a good review.