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Dafna11 [192]
3 years ago
8

Please help, it's a task in science and I'm really bad at this subject.

Chemistry
1 answer:
Nastasia [14]3 years ago
6 0

Answer:

1. solid

2. liquid

3. plasma

4. gas

Those are the four parts of matter.

Explanation:

I hope this helps.

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anyanavicka [17]

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Explanation:

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3 years ago
Will mark brainliest
ikadub [295]
Answer:

a. Heterogeneous
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d. Heterogeneous
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Explanation:

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Be sure to answer all parts. A concentration cell consists of two Sn/Sn2+ half-cells. The electrolyte in compartment A is 0.23 M
kolbaska11 [484]

Answer:

Part A. The half-cell B is the cathode and the half-cell A is the anode

Part B. 0.017V

Explanation:

Part A

The electrons must go from the anode to the cathode. At the anode oxidation takes place, and at the cathode a reduction, so the flow of electrons must go from the less concentrated solution to the most one (at oxidation the concentration intends to increase, and at the reduction, the concentration intends to decrease).

So, the half-cell B is the cathode and the half-cell A is the anode.

Part B

By the Nersnt equation:

E°cell = E° - (0.0592/n)*log[anode]/[cathode]

Where n is the number of electrons being changed in the reaction, in this case, n = 2 (Sn goes from S⁺²). Because the half-reactions are the same, the reduction potential of the anode is equal to the cathode, and E° = 0 V.

E°cell = 0 - (0.0592/2)*log(0.23/0.87)

E°cell = 0.017V

3 0
3 years ago
What is the 7th element on the periodic table?
aniked [119]
Nitrogen

Hope this helps!
4 0
3 years ago
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2. This graph shows the energy involved in a reaction involving two molecules. Describe what is happening or what the state of t
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If you think of it endothermic is when there is energy needed for the reaction to occur and exothermic is when the reaction releases energy
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