1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
marissa [1.9K]
3 years ago
8

What is Keq for an electrochemical reaction involving the transfer of 3 electrons, if E°cell = 0.652 V at

Physics
1 answer:
madam [21]3 years ago
6 0

Answer:

2.49 V.

Explanation:

The formula which relates the equilibrium condition in the electrochemical cell is,

logk_{eq}=\frac{n}{0.059}  E_{cell} ^{0}

Given that the number of electron is 3 and the value of E^{0} _{cell} is  0.652 V.

Now put these values in above equation.

logk_{eq}=\frac{3}{0.059}  (0.652 V)\\logk_{eq}=33.15 V\\k_{eq}=e^{33.15}V\\k_{eq}=2.49V

Therefore, the value of Keq for an electrochemical reaction is 2.49 V.

You might be interested in
Which of the following statement describes a nonpolar molecule
Sati [7]

Answer:

?

Explanation:

what are the statements

5 0
2 years ago
Read 2 more answers
Which element could be described by the list of properties above?
Murljashka [212]

Answer:  

list the properties

Explanation:

7 0
3 years ago
Read 2 more answers
A 0.200-m uniform bar has a mass of 0.795 kg and is released from rest in the vertical position, as the drawing indicates. The s
aleksklad [387]

Explanation:

Since, the rod is present in vertical position and the spring is unrestrained.

So, initial potential energy stored in the spring is U_{s} = 0

And, initial potential gravitational potential energy of the rod is U_{g} = \frac{mgL}{2}.

It is given that,

       mass of the bar = 0.795 kg

            g = 9.8 m/s^{2}

           L = length of the rod = 0.2 m

Initial total energy T = \frac{mgL}{2}

Now, when the rod is in horizontal position then final total energy will be as follows.

            T = \frac{1}{2}kx^{2} + I \omega^{2}

where,    I = moment of inertia of the rod about the end = \frac{mL^{2}}{3}

Also,    \omega = \frac{\nu}{L}

where,    \nu = speed of the tip of the rod

              x = spring extension

The initial unstrained length is x_{o} = 0.1 m

Therefore, final length will be calculated as follows.

              x' = \sqrt{(0.2)^{2} + (0.1)^{2}} m

Then,  x = x' - x_{o}

          x = \sqrt{(0.2)^{2} + (0.1)^{2}} m - 0.1 m

             = 0.1236 m

       k = 25 N/m

So, according to the law of conservation of energy

       \frac{mgL}{2} = \frac{1}{2}kx^{2} + \frac{1 \times mL^{2}}{2 \times 3}(\frac{\nu}{L})^{2}

      \frac{mgL}{2} = \frac{1}{2}kx^{2} + \frac{1}{6}mv^{2}

Putting the given values into the above formula as follows.

   \frac{mgL}{2} = \frac{1}{2}kx^{2} + \frac{1}{6}mv^{2}

  \frac{0.795 kg \times 9.8 \times 0.2 m}{2} = \frac{1}{2} \times 27 N/m \times (0.1236)^{2} + \frac{1}{6} \times 0.795 \times v^{2}

          v = 2.079 m/s

Thus, we can conclude that tangential speed with which end A strikes the horizontal surface is 2.079 m/s.

7 0
3 years ago
Which of the following states of matter has a definite volume? A. liquids only B. solids only C. liquids and gases only D. solid
Naily [24]
The answer is B because solids have a definite shape and volume
8 0
3 years ago
Read 2 more answers
Two people must have the same speed and velocity if
RideAnS [48]
If they both are moving with the same speed and direction
i.e. covering the same distance in the same time interval in the same direction
7 0
3 years ago
Read 2 more answers
Other questions:
  • To summarize and analyze data with both a crosstabulation and charting, Excel typically pair
    5·1 answer
  • Can two negatively charged balloons move apart without ever touching why or why not
    14·2 answers
  • What is the average acceleration during the time interval 0 seconds to 10 seconds?
    12·1 answer
  • Ann and Beth are measuring mass of an object, Ann reports a mass of 6 g while Beth obtains 6.0 g what are the range of uncertain
    11·1 answer
  • A 7780 ‑kg car is travelling at 30.7 m/s when the driver decides to exit the freeway by going up a ramp. After coasting 404 m al
    8·1 answer
  • How you can change the state of matter of the substance in the container.
    8·2 answers
  • Can someone see if it's right? thank you. ​
    13·1 answer
  • Compared to the amount of radiation received from the Sun, about how much radiation does the surface of the earth receive from t
    15·1 answer
  • As velocity____kinetic energy _____ and potential energy _____
    10·1 answer
  • exhibit 6-5 the weight of items produced by a machine is normally distributed with a mean of 8 ounces and a standard deviation o
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!