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r-ruslan [8.4K]
3 years ago
8

What effect do cows and other livestock have on global warming? Choose the best answer.

Chemistry
2 answers:
Annette [7]3 years ago
6 0
Greenhouse gas.

If u removed all livestock from the us alone greenhouse gas emissions would drop by 0.36%
Hope this helps u
Cloud [144]3 years ago
4 0

Answer:

Their digestive systems produce methane, a powerful

greenhouse gas

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What gets reduced in an electrolytic cell made with nickel and copper electrodes?
jekas [21]

Answer:

D. Ni²⁺  

Explanation:

We know at once that the answer cannot be A or C, because Ni and Cu are already in their lowest oxidation states.

The correct answer must be either B or D.

An electrolytic cell is the opposite of a galvanic cell. In the former, the reaction proceeds spontaneously. In the latter, you must force the reaction to occur.  

One strategy to solve this problem is:

  1. Look up the standard reduction potentials for the half reaction·
  2. Figure out the spontaneous direction.
  3. Write the equation in the reverse direction.

1. Standard reduction potentials

                                E°/V

Cu²⁺ + 2e⁻ ⟶ Cu; 0.3419

Ni²⁺ + 2e⁻ ⟶ Ni;  -0.257

2. Galvanic Cell

We reverse the direction of the more negative half cell and add.

                                       <u>E°/V </u>

Ni ⟶ Ni²⁺ + 2e⁻;           0.257

<u>Cu²⁺ + 2e⁻ ⟶ Cu;      </u>   0.3419

Ni + Cu²⁺ ⟶ Cu + Ni²⁺; 0.599

This is the spontaneous direction.

Cu²⁺ is reduced to Cu.

3. Electrochemical cell

                                        <u>E°/V</u>

Ni²⁺ + 2e⁻ ⟶ Ni;           -0.257

<u>Cu ⟶ Cu²⁺ + 2e⁻;        </u> <u>-0.3419</u>

Cu + Ni²⁺ ⟶ Ni + Cu²⁺; -0.599

This is the non-spontaneous direction.

Ni²⁺ is reduced to Ni in the electrolytic cell.

8 0
3 years ago
The reaction of an acid and a base will always produce what kind of salt?
Musya8 [376]

Explanation:

E maybe i am not sure or C

4 0
3 years ago
What is the wavelength of one ultraviolet photon if it’s frequency is 1.50 x 10^15 s^-1
Alik [6]
C=λν ==> λ=c/ν

λ= 3x10^8 m/s / 1.50 x 10^15 s^-1
λ= 2 x 10^-7 m
λ= 200 nm
5 0
3 years ago
Tra số liệu trong sổ tay hóa học và vẽ đồ thị biểu diễn sự thay đổi của năng lượng ion hóa
kirza4 [7]

Explanation:

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focidjeiedjenekfkfmf

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3 0
3 years ago
Answer all 5 questions, please
klemol [59]
1.) protons neutrons and electrons

2.) a wall outlet it is made up of metal that conducts heat. When when heat is applied it provides enough energy to these electrons

3.) is an imbalance if electric charges within or on the surface of a material

4.) static electricity decoded tiny changes in the surface of a balloon causes it to charge more when rubbed against our hair

5.) you might have to answer that on your own but if you don’t want to here’s my experience


One day me and my twin brother were jumping on the trampoline and when we fell down my hair rubbed against the surface of it and stuck up

Hope that helped and Brainiest?
6 0
4 years ago
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