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stiv31 [10]
4 years ago
9

Voltaic cells produce a positive overall cell potential. What does this indicate?

Chemistry
2 answers:
DerKrebs [107]4 years ago
5 0

Answer:

The reaction is spontaneous.

Explanation:

Margarita [4]4 years ago
4 0
A positive overall cell potential indicates that reaction will be spontaneous. There is a connection between the Gibbs free energy change (ΔG) and the overall potential:

ΔG = -nFE

where: n - the number of changed electrons, F - Faraday constant, E - the overall potential.
In order for a process to be spontaneous, the Gibbs free energy change has to be negative, and the above relation indicated that the overall potential has to be positive (since the number of electrons and Faraday constant have positive value). 



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molecules with a plane of symmetry between the chiral centers are achiral and meso. identify which of the following molecules ar
maks197457 [2]

Molecules with a plane of symmetry between the chiral centers are achiral and meso. From the given molecules (Picture attached) only (A) compound 1 is meso.

When compounds possess a plane of symmetry between the chiral centers they are called achiral or meso compounds. Among the given compounds (A) compound 1 have a plane of symmetry. So we can say compound one is a meso or achiral compound. Compounds two, three, and four have no plane of symmetry, as you can see in the structures attached. So all other compounds (compound 2, compound 3, and compound 4) except compound one are not meso or achiral.

You can also learn about meso compounds from the following question:

brainly.com/question/29022658

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7 0
1 year ago
Potassium-40 has a half-life of 1.277 mc013-1.jpg 109 years. After 1.022 mc013-2.jpg1010 years, how much potassium-40 will remai
olchik [2.2K]
The correct answer is approximately 1.95g. First, take (1.022*10^10)/(1.277*10^9). This is the same as time elapsed/half-life. This gives you 8, which is the number of half lives. Then multiply mass (500.3g) by (1/2)^8, resulting in 1.95g, which is the answer.
8 0
4 years ago
Read 2 more answers
Name something that has zero thermal energy.
77julia77 [94]
Absolute zero is the point at which the fundamental particles of nature have minimal vibrational motion, retaining only quantum mechanical, zero-point energy-induced particle motion.
Hope this helped! c:
4 0
3 years ago
Read 2 more answers
Which statement describes thermal energy?
Alona [7]

Answer: Option (d) is the correct answer.

Explanation:

Thermal energy is defined as the internal energy of an object because of the kinetic energy present within the molecules of the object.

So, when thermal energy is added to an object then kinetic energy within its molecules will also increase. As a result, temperature of the object will also increase due to increase in number of collisions between the molecules.

Therefore, we can conclude that the statement energy that is associated with temperature, describes thermal energy.

5 0
3 years ago
Read 2 more answers
55 kg of liquefied natural gas (lng) are stored in a rigid, sealed 0.17 m3 vessel. in this problem, model lng as 100% methane. d
dexar [7]

I am assuming that the problem ask for the pressure in the system. To be able to calculate this, we first assume that the system acts like an ideal gas, then we can use the ideal gas equation to find for pressure P.

P V = n R T

where,

P = Pressure (unknown)

V = 0.17 m^3

n = moles of lng / methane

R = gas constant = 8.314 Pa m^3 / mol K

T = 200 K

We find for the moles of lng. Molar mass of methane = 16 kg / kmol

n = 55 kg / 16 kg / kmol

n = 3.44 kmol CH4 = 3440 mol

 

Substituting all the values to the ideal gas equation:

P = 3440 mol * (8.314 Pa m^3 / mol K) * 200 K / 0.17 m^3

P = 33,647,247 Pa

<span>P = 33.6 MPa</span>

6 0
3 years ago
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