Answer:
4.77 is the pH of the given buffer .
Explanation:
To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:
We are given:
= Dissociation constant of propanoic acid =
pH = ?
Putting values in above equation, we get:
pH = 4.77
4.77 is the pH of the given buffer .
Answer:
It's D.
Explanation:
That would be choice D which might be called a double decomposition reaction - an exchange of ions where no electrons are lost or gained. The silver chloride appears as a white precipitate.
<h3><u>Question</u> :-</h3>
- A car starts from rest and accelerates at 2.5m/s² for 2s. What is the final velocity of the car?
<h3><u>Required Solution </u>:-</h3>
- The final velocity of the car is 5 m/s
<h3><u>Provided that</u> :-</h3>
- Acceleration, a = 2.5m/s²
- Time taken, t = 2 sec
- Initial velocity, u = 0 m/s (As car started from rest)
<h3><u>To Calculate</u> :-</h3>
- The final velocity of the car
<h3><u>Required Equations of Motion </u>:-</h3>
<h3><u>Calculation</u> :-</h3>
<u>Henceforth</u> –
- The final velocity of the car is 5 m/s
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Answer:
D, They produce fossil fuels
Explanation:
you can't just pull them out of nowhere