Answer:
Explanation:
We must use the Nernst equation
1. Write the equation for the cell reaction
If you want the reduction potential, the pH 5.65 solution is the cathode, and the cell reaction is
<u> E°/V</u>
Anode: H₂(1 bar) ⇌ 2H⁺(1 mol·L⁻¹) + 2e⁻; 0
Cathode: <u>2H⁺(pH 5.65) + 2e⁻ ⇌ H₂(1 bar)</u>; <u> 0 </u>
Overall: 2H⁺ (pH 5.65) ⇌ 2H⁺(1 mol·L⁻¹); 0
Step 2. Calculate E°
(a) Data
E° = 0
R = 8.314 J·K⁻¹mol⁻¹
T = 25 °C
n = 2
F = 96 485 C/mol
pH = 5.65
Calculations:
T = 25 + 273.15 = 298.15 K
![\text{H}^{+} = 10^{\text{-pH}} = 2.24 \times 10^{-5}\text{ mol/\L}\\\\Q = \dfrac{\text{[H}^{+}]_{\text{prod}}^{2}}{\text{[H}^{+}]_{\text{react}}^{2}} = \dfrac{(1.00)^{2}}{(2.24 \times 10^{-5})^{2}} =2.00 \times 10^{9}\\\\\\E = 0 - \left (\dfrac{8.314 \times 298.15 }{2 \times 96485}\right ) \ln{2.00 \times 10^{9}}\\\\= -0.01285 \times 21.41 = \textbf{-0.275 V}\\\text{The cell potential for the cell as written is }\boxed{\textbf{-0.275 V}}](https://tex.z-dn.net/?f=%5Ctext%7BH%7D%5E%7B%2B%7D%20%3D%2010%5E%7B%5Ctext%7B-pH%7D%7D%20%3D%202.24%20%5Ctimes%2010%5E%7B-5%7D%5Ctext%7B%20mol%2F%5CL%7D%5C%5C%5C%5CQ%20%3D%20%5Cdfrac%7B%5Ctext%7B%5BH%7D%5E%7B%2B%7D%5D_%7B%5Ctext%7Bprod%7D%7D%5E%7B2%7D%7D%7B%5Ctext%7B%5BH%7D%5E%7B%2B%7D%5D_%7B%5Ctext%7Breact%7D%7D%5E%7B2%7D%7D%20%3D%20%5Cdfrac%7B%281.00%29%5E%7B2%7D%7D%7B%282.24%20%5Ctimes%2010%5E%7B-5%7D%29%5E%7B2%7D%7D%20%3D2.00%20%5Ctimes%2010%5E%7B9%7D%5C%5C%5C%5C%5C%5CE%20%3D%200%20-%20%5Cleft%20%28%5Cdfrac%7B8.314%20%5Ctimes%20298.15%20%7D%7B2%20%5Ctimes%2096485%7D%5Cright%20%29%20%5Cln%7B2.00%20%5Ctimes%2010%5E%7B9%7D%7D%5C%5C%5C%5C%3D%20-0.01285%20%5Ctimes%2021.41%20%3D%20%5Ctextbf%7B-0.275%20V%7D%5C%5C%5Ctext%7BThe%20cell%20potential%20for%20the%20cell%20as%20written%20is%20%7D%5Cboxed%7B%5Ctextbf%7B-0.275%20V%7D%7D)
Erosion is described as breaking down of rocks into smaller pieces.
Hope this Helps!
Answer:
D) The baby will continue to move forward as the car slows and be push into the padded car seat.
Explanation:
Newton's first law states that an object tends to be in a state of rest or motion unless and until an unbalanced external force acts on it. This means a body would continue to be in a state of motion unless external force stops it. A body in the state of rest will remain at rest unless an external force moves it.
An infant car seat is made to face the rear of the car. This is because, in case of a front-end collision, the car would come to a sudden stop but the bodies inside the car are in a state of motion and a sudden halt will cause the body to push in the opposite direction.
Thus, for an infant in the car, it would be a safer measure to place the seat facing the rear o the car because in this case, it would cause the baby to safely collide with the padded seat of the car.
Answer:
我實際上不知道答案，我只是為了點數而這樣做，哈哈，祝你好運哈哈
Explanation:
我實際上不知道答案，我只是為了點我實際上不知道答案，我只是為了點數而這樣做，哈哈，祝你好運哈哈數而這樣做，哈哈，祝你好運哈哈
Answer: An energy resource is something that can produce heat, power life, move objects, or produce electricity
