The pair that results in the most effective buffer is .50 M Ha and .50 M A-.
<span>A </span>buffer's<span> capacity
is the pH range where it works as an </span>effective buffer, preventing large changes in pH upon addition of
an acid or base.
The correct answer between all
the choices given is the second choice or letter B. I am hoping that this
answer has satisfied your query and it will be able to help you in your
endeavor, and if you would like, feel free to ask another question.
Answer:
<h2>844.4 mmHg</h2>
Explanation:
The new pressure can be found by using the formula for Boyle's law which is

Since we are finding the new pressure

From the question we have

We have the final answer as
<h3>844.4 mmHg</h3>
Hope this helps you
The scientist who discovered the first real evidence of the big bang was EDWIN HUBBLE.
Astronomer Edwin Hubble was an American astrophysicist. He contributed in so many ways to humanity during his lifetime. One of his contribution is that, his observation showed the existence of galaxies that are far beyond the milky way; these galaxies were moving away from one another. This observation serves as a concrete evidence for the big bang theory, which explain the origin of the universe.
<span>D. all of the above because ionic compound is a salt. it is also held together by ionic bonds. it has anions and cations </span>