Answer:
4.22 × 10 ⁻²² mol
Explanation:
Given data:
Number of molecules of bromine = 254 molecules
Number of moles = ?
Solution:
1 mole = 6.02 × 10 ²³ molecules
254 molecules × 1 mol / 6.02 × 10 ²³ molecules
42.2 × 10 ⁻²³ mol
4.22 × 10 ⁻²² mol
Answer:
Ksp = 7.4x10⁻⁷
Explanation:
Molar solubility of a substance is defined as the amount of moles of that can be dissolved per liter of solution.
Ksp of Zn(OH)₂ is:
Zn(OH)₂(s) ⇄ Zn²⁺ + 2OH⁻
Ksp = [Zn²⁺] [OH⁻]²
And the molar solubility, X, is:
Zn(OH)₂(s) ⇄ Zn²⁺ + 2OH⁻
⇄ X + 2X
<em>Because X are moles of substance dissolved.</em>
<em>Ksp = </em>[X] [2X]²
Ksp = 4X³
As molar solubility, X, is 5.7x10⁻³mol/L:
Ksp = 4X³
Ksp = 4 (5.7x10⁻³mol/L)³
<h3>Ksp = 7.4x10⁻⁷</h3>
Solutions with pH less than 7 are acidic in nature.
Therefore, a substance of pH 6 will be a weak acid.
Answer:
a. Both glycogen phosphorylase and glycogen synthase are phosphorylated
Explanation:
Glycogenesis is the process of glycogen synthesis while glycogenolysis is the process of glycogen breakdown.
They both hold a reciprocal relationship between them and the factors which enhance the rate of one, inhibit the other.
The main forms of the control is varied phosphorylation of the enzyme, glycogen synthase and enzyme, glycogen phosphorylase by the protein kinase A .
<u>On phosphorylation, Phosphorylated glycogen synthase is inactive while glycogen phosphorylase is activate.</u>
During fast state, glucose is required by the body which is provided by the process of glycogenolysis and thus phosphorylation will help to regulate the process.
