In my opinion, the correct answer is the third option. Solution is the mixture that allows a beam of light pass through a liquid in a test tube without scattering.This is because particles are distributed evenly throughout the mixture which allows light to pass directly.
Answer:
The correct answer is coenzymes for the pentose phosphate pathway require thiamine as a precursor.The brain uses glucose metabolized in glycolysis and citric acid cycle as its main source of energy.
Explanation:
Thiamine is the chemical name of vitamin B1.Thiamine is used as co enzymes in form of thiamine pyro phosphate.
An enzyme of pentose phosphate pathway known as transketolase uses TPP as a coenzyme.As a result due to te deficiency of Thiamine pentose phosphate pathway is hampered.
On the other hand TPP is an important coenzyme of pyruvate dehydrogenase enzyme complex which catalyses the conversion of pyruvate into acetyl CoA.
Due to defeciency of Thiamine the acttivity of pyruvate dehydrogenase enzyme system is somehow hampered .As a result glucose cannot be completely metabolized into CO2 and H2O.
Therefore brain cannot function normally because brain depends on glucose as the principle source of energy.
Answer:
C. as electrons jump from higher energy levels to lower levels
Explanation:
Atoms of elements are capable of emitting photons i.e. light energy. They, however, only do so when they become excited at first. They remain excited for a short while and then begin to move from their excited electron level to a lower level.
As they move from high electron level to low electron level, atoms emit light energy in form of visible, ultraviolet light in a process called SPONTANEOUS EMISSION. Therefore, according to this question, atoms emit visible and ultraviolet light as electrons jump from higher energy levels to lower levels.
Answer:
391.462 g
Explanation:
First, let's calculate the total mass of the solution by the definition of density (d)
d = m/V, where <em>m</em> is the mass in gram and <em>V</em> the volume in mL. So for the given solution
1.285 = m/800
m = 1028 g
The mass of sulfuric acid will be:
0.3808x1028 = 391.462 g
Answer:
Mole fraction = 0,0166
Explanation:
Mole fraction is defined as mole of a compound per total moles of the mixture. In the solution, the solute is fructose and the solvent is water. That means you need to find moles of fructose and moles of water.
The molecular mass of fructose is 180,16g/mol and mass of water is 18,02 g/mol. Using these values:
91,7g fructose × (1mol / 180,16g) = <em>0,509 moles of fructose</em>
545g water × (1mol / 18,02g) = <em>30,24 moles of water</em>
Thus, mole fraction of fructose is:
<em>Mole fraction = 0,0166</em>
I hope it helps!
