The pH at which bromothymol blue be a perfect green color is; pH = 6.8
<h3>What is the PH?</h3>
For Bromothymol, as HX is yellow and X⁻ is blue, the indicator will be a perfect green color when HX = X⁻.
From Henderson-Hasselbalch formula, we known that:
pH = pka + log [X⁻]/[HX] (1)
Where pka = -log ka = -log(1.6 × 10⁻⁷) = 6.8
Since HX = X⁻, [HX]/[X⁻] = 1
Thus;
pH = 6.8 + log 1
pH = 6.8 + 0
pH = 6.8
Read more about pH of solution at; brainly.com/question/13011143
Answer:
A
Explanation:
The correct answer is "the bright reds and oranges of the sunset caught my attention as I relaxed this evening," because it employs effective imagery without being overly complex and wordy.
The common feature about all fossil fuels is that they all contain the element carbon and hydrogen.Fossil fuels are those fuels that are formed as a result of geologic processes acting on the remains of organic matter produced by photosynthesis, a process that began billions of years ago.
Examples of fossil fuels are: Coal
petroleum,natural gas,oil shales,bitumens,
tar sands, and heavy oils.
These fossil fuels are hydrocarbons which are made up mainly carbon and hydrogen with other elements such as sulfur, nitrogen, oxygen, and mineral matter.
Therefore, the common feature about all fossil fuels is that they all contain the elements, carbon and hydrogen because they are hydrocarbons.
Answer:
He was the 35th president of the USA.
For social justice, he secured black voting rights and issued a weak order of ending discrimination.