Answer:
Percentage of chymotrypsin proteins that are active is 90,91%
Explanation:
The active site, His-57, is in equilibrium, thus:
His-57H⁺ ⇄ His-57 + H⁺
Where His-57H⁺ is the active site in its protonated form.
For this equilibrium, Henderson-Hasselbalch formula is:
pH = pka + log₁₀ (His-57/His-57H⁺)
If pH is 7 and pka is 6:
7 = 6 + log₁₀ (His-57/His-57H⁺)
1 = log₁₀ (His-57/His-57H⁺)
10 = His-57/His-57H⁺
10 (His-57H⁺) = His-57 <em>(1)</em>
If total active sites are 100%
100 = His-57H⁺ + His-57 <em>(2)</em>
Replacing (2) in (1)
His-57H⁺ = 9,09%
<em>His-57 = 90,91%</em>
Thus, percentage of chymotrypsin proteins that are active is 90,91%
I hope it helps!
<u>Answer:</u> The molar solubility of carbon dioxide gas is 0.17 M
<u>Explanation:</u>
Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.
To calculate the molar solubility, we use the equation given by Henry's law, which is:
where,
= Henry's constant = 
= partial pressure of carbonated drink = 4.5 atm
Putting values in above equation, we get:
Hence, the molar solubility of carbon dioxide gas is 0.17 M
Answer:
Separation by density
Explanation:
Mixtures are made up of two or more pure substances which tends to keep their individual identities. These components can be separated from each other by different physical techniques.
Mixtures are further classified as;
(i) Homogenous Mixture:
In this type of the mixtures the components are uniformly mixed and their properties as well as composition as uniform throughout. Such mixtures are also called as solutions.
The physical methods used to separate these components from each other are distillation (taking heat and pressure into account), Solvent extraction, Magnetic separation, Chromatography e.t.c.
(ii) Homogenous Mixture:
In this type of the mixtures the components are not uniformly mixed and their physical properties and composition are also not uniform.
The physical methods used to separate these components from each other are Filtration, Magnetic Separation, Centrifugation, Flotation e.t.c.
So, in given options the density can play role by settling the massive components of heterogenous mixture to sit at the bottom and separated
