Answer:
A) Concentration of A left at equilibrium of we started the reaction with [A] = 2.00 M and [B] = 2.00 M is 0.55 M.
B) Final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M is 0.90 M.
[D] = 0.90 M
Explanation:
With the first assumption that the volume of reacting mixture doesn't change throughout the reaction.
This allows us to use concentration in mol/L interchangeably with number of moles in stoichiometric calculations.
- The first attached image contains the correct question.
- The solution to part A is presented in the second attached image.
- The solution to part B is presented in the third attached image.
Answer: A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity.
Example: playground swing
The average velocity of the car for the whole journey is 69.57 km/h.
The given parameters:
- <em>Length of the road, L = 320 km</em>
- <em>Distance covered = 240 km at 75 km/h</em>
- <em>time spent refueling, t₂ = 0.6 hr</em>
- <em>Final velocity, = 100 km/hr</em>
The time spent by the before refueling is calculated as follows;
![t = \frac{d}{v} \\\\t_1 = \frac{240}{75} \\\\t_1 = 3.2 \ hours](https://tex.z-dn.net/?f=t%20%3D%20%5Cfrac%7Bd%7D%7Bv%7D%20%5C%5C%5C%5Ct_1%20%3D%20%5Cfrac%7B240%7D%7B75%7D%20%5C%5C%5C%5Ct_1%20%3D%203.2%20%5C%20hours)
The time spent by the car for the remaining journey;
![t_3 = \frac{320 - 240}{100} \\\\t_3 = 0.8 \ hr](https://tex.z-dn.net/?f=t_3%20%3D%20%5Cfrac%7B320%20-%20240%7D%7B100%7D%20%5C%5C%5C%5Ct_3%20%3D%200.8%20%5C%20hr)
The total time of the journey is calculated as follows;
![t = t_1 + t_2 + t_3\\\\t = 3.2 \ hr \ + \ 0.6 \ hr \ + \ 0.8 \ hr\\\\t = 4.6 \ hours](https://tex.z-dn.net/?f=t%20%3D%20t_1%20%2B%20t_2%20%2B%20t_3%5C%5C%5C%5Ct%20%3D%203.2%20%5C%20hr%20%5C%20%2B%20%5C%200.6%20%5C%20hr%20%5C%20%2B%20%5C%200.8%20%5C%20hr%5C%5C%5C%5Ct%20%3D%204.6%20%5C%20hours)
The average velocity of the car for the whole journey is calculated as follows;
![v = \frac{total \ distance }{total \ time} \\\\v = \frac{320}{4.6} \\\\v = 69.57 \ km/h](https://tex.z-dn.net/?f=v%20%3D%20%5Cfrac%7Btotal%20%5C%20distance%20%7D%7Btotal%20%5C%20time%7D%20%5C%5C%5C%5Cv%20%3D%20%5Cfrac%7B320%7D%7B4.6%7D%20%5C%5C%5C%5Cv%20%3D%2069.57%20%5C%20km%2Fh)
Learn more about average velocity here: brainly.com/question/6504879
<u>Answer:</u> runoff water is water from rain, snow, or other sources, that flows through the land, and is a major component of the water cycle.