Answer:
The minimum concentration of sodium sulfate required to producer precipitation is .
Explanation:
Concentration of barium chloride=
Concentration of barium ions =
1 mol of barium chloride gives 1 mol of barium ions.
The solubility product for barium sulfate=
0.019 M S
The expression of solubility product for barium sulfate:
The minimum concentration of sulfate ions =
1 mole of sulfate ions are proceed form 1 mole of sodium sulfate solution.
Then sulfate ions will be obtained from:
of sodium sulfate
The minimum concentration of sodium sulfate required to producer precipitation is .
Answer is: <span>Mutations sometimes improve the chances of survival for a plant.
</span>Mutations are very important because they change <span>variability in populations and in that way enable evolutionary change.
</span>There are three types of mutations:
1) good or advantageous mutations - <span> improve the chances of survival for a plant.
2) </span>bad or deleterious - decrease the chances of survival for a plant.
3) neutral - not affect he chances of survival for a plant.
Answer:
I would expect to extract the acetic acid.
Explanation:
In the first step, since we are adding a concentrated acid,<u> it will react with the bases present in the mixture (diethylamine and ammonia) </u><u>forming salts</u><u>, </u><u>which are soluble in water</u>. Therefore, after draining the aqueous layer, we will have phenol and acetic acid left in the organic layer.
In the second step, we are adding a diluted base, so it will react with a strong acid. This compound is acetic acid, and its salt will be present in the aqueous layer. Phenol will be left on the organic layer.
Your answer is <span>32.370%</span>