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Fed [463]
4 years ago
5

Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring

in an electrochemical cell at 25°C. (The equation is balanced.) 3 Cl2(g) + 2 Fe(s) → 6 Cl-(aq) + 2 Fe3+(aq) Cl2(g) + 2 e- → 2 Cl-(aq) E° = +1.36 V Fe3+(aq) + 3 e- → Fe(s) E° = -0.04 V

Chemistry
1 answer:
Ray Of Light [21]4 years ago
3 0

Just see the picture. Hope it helped u :)

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Use the information in the table about four different electric circuits to answer the question
ycow [4]

Answer:

Circuit 4

Explanation:

To know the correct answer to the question given above, we shall determine the current in each circuit. This can be obtained as follow:

For circuit 1:

Resistance (R) = 0.5 ohms

Voltage (V) = 20 V

Current (I) =?

V = IR

20 = I × 0.5

Divide both side by 0.5

I = 20 / 0.5

I = 40 A

For circuit 2:

Resistance (R) = 0.5 ohms

Voltage (V) = 40 V

Current (I) =?

V = IR

40 = I × 0.5

Divide both side by 0.5

I = 40 / 0.5

I = 80 A

For circuit 3:

Resistance (R) = 0.25 ohms

Voltage (V) = 40 V

Current (I) =?

V = IR

40 = I × 0.25

Divide both side by 0.25

I = 40 / 0.25

I = 160 A

For circuit 4:

Resistance (R) = 0.25 ohms

Voltage (V) = 60 V

Current (I) =?

V = IR

60 = I × 0.25

Divide both side by 0.25

I = 60 / 0.25

I = 240 A

SUMMARY

Circuit >>>>>> Current

1 >>>>>>>>>>> 40 A

2 >>>>>>>>>>> 80 A

3 >>>>>>>>>>> 160 A

4 >>>>>>>>>>> 240 A

From the above calculation, circuit 4 has the greatest electric current.

8 0
3 years ago
In an energy diagram, the reactants are at a higher potential energy compared to the products. Which of the following best descr
mrs_skeptik [129]

Answer is (D) - It is exothermic and will have a negative enthalpy.


If the reactants are at a higher potential energy compared to the products, it means reactants have more energy than the products. That energy is released to the environment as heat. Due to the releasing of heat to the surrounding, the reaction is exothermic. Since the reaction is exothermic; the enthalpy of the reaction will be negative value.


3 0
4 years ago
What are some examples of physical properties?
den301095 [7]

Answer:

Physical properties: how soft a blanket it, how hard bread is, what color leaves are, what bleach smells like.

Chemical change: burning wood, rotting food, digestion, rusting of a nail.

Physical change: mixing salt and sugar, tearing a piece of paper, melting ice, chopping wood.

Explanation:

Physical properties are properties that are measurable.

Chemical change is when substances combine (fire and wood make burning wood) to make another substance. They aren't reversible. If you were to melt ice, you could refreeze it, you can't unburn wood.

Physical change is something that alters the form of the substance but not the chemical composition.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Gold (au) goes from an oxidation number of +3 to 0 in the reaction below. 2Au3+ + 6I- ---> 2Au + 3I2. what describes the Au3+
mamaluj [8]
In a reduction-oxidation or better known as REDOX reaction, the substance that reduces the oxidation state is known as the substance that is REDUCED. It serves as the oxidizing agent. Thus, Au3+  in this number is considered as the oxidizing agent. 
7 0
3 years ago
Read 2 more answers
The atomic symbol superscript 40 subscript 19 upper k. represents potassium-40 (k-40), a radioactive isotope that has 19 protons
Oksana_A [137]

Answer:

40/18AR

Explanation:

sorry my answer was late but i hope this helps someone else! I got it right on the test

8 0
2 years ago
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