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jenyasd209 [6]
3 years ago
7

Which of the following is INCORRECT about

Chemistry
1 answer:
Bas_tet [7]3 years ago
6 0

Answer:umm I think it’s B

Explanation:

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Given that E°red = -1.66 V for Al3+/ Al at 25°C, find E° and E for the concentration cell expressed using shorthand notation bel
lbvjy [14]

Answer:

E° = 0.00 V

E = 0.079 V

Explanation:

We can identify both half-reactions occurring in a concentration cell.

Anode (oxidation): Al(s) → Al³⁺(1.0 × 10⁻⁵ M) + 3 e⁻   E°red = -1.66 V

Cathode (reduction): Al³⁺(0.100 M) + 3 e⁻ → Al(s)     E°red = -1.66 V

The global reaction is:

Al(s) + Al³⁺(0.100 M) → Al³⁺(1.0 × 10⁻⁵ M) + Al(s)

The standard cell potential (E°) is the difference between the standard reduction potential of the cathode and the standard reduction potential of the anode.

E° = E°red, cat - E°red, an = -1.66 V - (-1.66 V) = 0.00 V

To calculate the cell potential (E) we have to use the Nernst equation.

E = E° - (0.05916/n) .log Q

where,

n: moles of electrons transferred

Q: reaction quotient

E = 0.00 V - (0.05916/3) .log (1.0 × 10⁻⁵/0.100)

E = 0.079 V

4 0
3 years ago
What frequency is a wave with a wavelength of 1km?
ryzh [129]

The frequency of wavelength of 1km <u>299792.458 Hz.</u>

These molecules already react to the inward motion of the loudspeaker membrane moving toward the source. Frequency and wavelength are inversely proportional to each other. The wave with the greatest frequency has the shortest wavelength. Twice the frequency means one-half the wavelength. For this reason, the wavelength ratio is the inverse of the frequency ratio.

calculation:-

C= wavelength × frequency

frequency = 3 × 10⁸/ 1000 Hz

= 299792.458 Hz.

= 3 ×10⁵ Hz

Based on such a model, we found that mass is not an intrinsic property of the particle. Instead, mass is basically a measure of particle energy. The relations between energy and mass can be directly derived based on the wave properties of the particle. Waves are one of the ways in which energy may be transferred between stores. Waves can be described as oscillations or vibrations about a resting position.

Learn more about The wavelength here:-brainly.com/question/10728818

#SPJ1

4 0
1 year ago
Read 2 more answers
Please answer this for points
kolbaska11 [484]
I believe the answer is Synthesis
7 0
3 years ago
people can increase water conservation by eating more food drinking more water taking longer showers reducing water pollution
hram777 [196]
Reduce water pollution
8 0
4 years ago
Read 2 more answers
In dry climates, rates of evaporation exceed what?
Dennis_Churaev [7]
<h2>Answer:</h2>

<u>In dry climates, rates of evaporation exceed precipitation</u>

<h2>Explanation:</h2>

Evaporation is an important process in the global water cycle. Sunrays hits the surface of water or land and causes water to change state from a liquid to a gas. This is what we call evaporation. When evaporation occurs, at the same time precipitation occurs in the atmosphere which is the water falling from the clouds as rain, freezing rain, sleet, snow, or hail. As the rate of evaporation increases, the rate of precipitations increases too because both are connected to each other.

3 0
3 years ago
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