Descriptive Investigations- involve describing and/or qualifying parts of a natural system.
Comparative Investigations-
involve collecting data from different populations/organisms under different conditions (so basically a comparison between the two).
Experimental Investigations- involving experiments to test the data hypothesized.
The PDF that I am sharing will help you understand more about these types of investigations.
<span>When pKas of polyprotic intermediates have a difference of 2 or more you just average them using the equation: pH = (pKa2 + pKa3) / 2 </span>
<span>pKa2 = -log(Ka2) ; pKa3 = -log(Ka3) </span>
<span>so, for this problem, REGARDLESS OF THE CONCENTRATION GIVEN, the answer is: </span>
<span>pH = (7.2076+12.3767) / 2 </span>
<span>pH = 9.79</span>
Distilled water.high school Lab
Tri-blade radiation symbol
Eye
Explanation:
Vitreous humor is found in the human eye and other animals.
It is a gel that fills the space between the lens and retina of the eye. This matter helps to keep the shape of the eye in place by maintaining a constant pressure in the eye.
It is typically made up of water, gelatinous and transparent.
Learn more:
Human eye brainly.com/question/8032392
Color in the eye brainly.com/question/9434044
#learnwithBrainly